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[arch-security] [ASA-201711-23] firefox: multiple issues
by Remi Gacogne 16 Nov '17

16 Nov '17

Arch Linux Security Advisory ASA-201711-23 ========================================== Severity: Critical Date : 2017-11-15 CVE-ID : CVE-2017-7826 CVE-2017-7827 CVE-2017-7828 CVE-2017-7830 CVE-2017-7831 CVE-2017-7832 CVE-2017-7833 CVE-2017-7834 CVE-2017-7835 CVE-2017-7836 CVE-2017-7837 CVE-2017-7838 CVE-2017-7839 CVE-2017-7840 CVE-2017-7842 Package : firefox Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-494 Summary ======= The package firefox before version 57.0-1 is vulnerable to multiple issues including arbitrary code execution, same-origin policy bypass, access restriction bypass, content spoofing, information disclosure, privilege escalation and cross-site scripting. Resolution ========== Upgrade to 57.0-1. # pacman -Syu "firefox>=57.0-1" The problems have been fixed upstream in version 57.0. Workaround ========== None. Description =========== - CVE-2017-7826 (arbitrary code execution) Several reported memory safety bugs have been found in Firefox before 57.0. Some of these bugs showed evidence of memory corruption and with enough effort some of these could probably be exploited to run arbitrary code. - CVE-2017-7827 (arbitrary code execution) Several memory safety bugs have been found in Firefox before 57.0. Some of these bugs showed evidence of memory corruption and with enough effort some of these could probably be exploited to run arbitrary code. - CVE-2017-7828 (arbitrary code execution) A use-after-free vulnerability can occur in Firefox before 57.0 when flushing and resizing layout because the PressShell object has been freed while still in use. This results in a potentially exploitable crash during these operations. - CVE-2017-7830 (same-origin policy bypass) The Resource Timing API in Firefox before 57.0 incorrectly revealed navigations in cross-origin iframes. This is a same-origin policy violation and could allow for data theft of URLs loaded by users. - CVE-2017-7831 (information disclosure) A vulnerability has been found in Firefox before 57.0 where the security wrapper does not deny access to some exposed properties using the deprecated exposedProps mechanism on proxy objects. These properties should be explicitly unavailable to proxy objects. - CVE-2017-7832 (content spoofing) The combined, single character, version of the letter 'i' with any of the potential accents in unicode, such as acute or grave, can be spoofed in the addressbar of Firefox before 57.0 by the dotless version of 'i' followed by the same accent as a second character with most font sets. This allows for domain spoofing attacks because these combined domain names do not display as punycode. - CVE-2017-7833 (content spoofing) Some Arabic and Indic vowel marker characters can be combined with Latin characters in a domain name to eclipse the non-Latin character with some font sets on the addressbar of Firefox before 57.0. The non- Latin character will not be visible to most viewers. This allows for domain spoofing attacks because these combined domain names do not display as punycode. - CVE-2017-7834 (access restriction bypass) A data: URL loaded in a new tab of Firefox before 57.0 did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when data: documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. - CVE-2017-7835 (access restriction bypass) Mixed content blocking of insecure (HTTP) sub-resources in a secure (HTTPS) document was not correctly applied for resources that redirect from HTTPS to HTTP, allowing content that should be blocked, such as scripts, to be loaded on a page in Firefox before 57.0. - CVE-2017-7836 (privilege escalation) The "pingsender" executable used by the Firefox Health Report before 57.0 dynamically loads a system copy of libcurl, which an attacker could replace. This allows for privilege escalation as the replaced libcurl code will run with Firefox's privileges. This attack requires an attacker have local system access. - CVE-2017-7837 (same-origin policy bypass) SVG loaded through <img> tags in Firefox before 57.0 can use <meta> tags within the SVG data to set cookies for that page. - CVE-2017-7838 (content spoofing) Punycode format text in Firefox before 57.0 will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited spoofing attacks due to user confusion. - CVE-2017-7839 (cross-site scripting) Control characters prepended before javascript: URLs pasted in the addressbar in Firefox before 57.0 can cause the leading characters to be ignored and the pasted JavaScript to be executed instead of being blocked. This could be used in social engineering and self-cross-site- scripting (self-XSS) attacks where users are convinced to copy and paste text into the addressbar. - CVE-2017-7840 (cross-site scripting) JavaScript can be injected into an exported bookmarks file by placing JavaScript code into user-supplied tags in saved bookmarks in Firefox before 57.0. If the resulting exported HTML file is later opened in a browser this JavaScript will be executed. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks if users were convinced to add malicious tags to bookmarks, export them, and then open the resulting file. - CVE-2017-7842 (information disclosure) If a document’s Referrer Policy attribute is set to "no-referrer" sometimes two network requests are made for <link> elements instead of one in Firefox before 57.0. One of these requests includes the referrer instead of respecting the set policy to not include a referrer on requests. Impact ====== A remote attacker can bypass the same-origin policy or the content security policy, spoof the content of the addressbar, trick a user into a self-XSS attack, access sensitive information or execute arbitrary code on the affected host. A local attacker might be able to escalate privilege. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/ https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7826 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1394530%2C1369561%2C1411458… https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7827 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1399922%2C1403646%2C1403716… https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7828 https://bugzilla.mozilla.org/show_bug.cgi?id=1406750 https://bugzilla.mozilla.org/show_bug.cgi?id=1412252 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7830 https://bugzilla.mozilla.org/show_bug.cgi?id=1408990 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7831 https://bugzilla.mozilla.org/show_bug.cgi?id=1392026 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7832 https://bugzilla.mozilla.org/show_bug.cgi?id=1408782 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7833 https://bugzilla.mozilla.org/show_bug.cgi?id=1370497 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7834 https://bugzilla.mozilla.org/show_bug.cgi?id=1358009 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7835 https://bugzilla.mozilla.org/show_bug.cgi?id=1402363 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7836 https://bugzilla.mozilla.org/show_bug.cgi?id=1401339 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7837 https://bugzilla.mozilla.org/show_bug.cgi?id=1325923 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7838 https://bugzilla.mozilla.org/show_bug.cgi?id=1399540 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7839 https://bugzilla.mozilla.org/show_bug.cgi?id=1402896 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7840 https://bugzilla.mozilla.org/show_bug.cgi?id=1366420 https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/#CVE-2017-7842 https://bugzilla.mozilla.org/show_bug.cgi?id=1397064 https://security.archlinux.org/CVE-2017-7826 https://security.archlinux.org/CVE-2017-7827 https://security.archlinux.org/CVE-2017-7828 https://security.archlinux.org/CVE-2017-7830 https://security.archlinux.org/CVE-2017-7831 https://security.archlinux.org/CVE-2017-7832 https://security.archlinux.org/CVE-2017-7833 https://security.archlinux.org/CVE-2017-7834 https://security.archlinux.org/CVE-2017-7835 https://security.archlinux.org/CVE-2017-7836 https://security.archlinux.org/CVE-2017-7837 https://security.archlinux.org/CVE-2017-7838 https://security.archlinux.org/CVE-2017-7839 https://security.archlinux.org/CVE-2017-7840 https://security.archlinux.org/CVE-2017-7842

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[arch-security] [ASA-201711-22] lib32-flashplugin: arbitrary code execution
by Levente Polyak 15 Nov '17

15 Nov '17

Arch Linux Security Advisory ASA-201711-22 ========================================== Severity: Critical Date : 2017-11-15 CVE-ID : CVE-2017-11213 CVE-2017-11215 CVE-2017-11225 CVE-2017-3112 CVE-2017-3114 Package : lib32-flashplugin Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-493 Summary ======= The package lib32-flashplugin before version 27.0.0.187-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 27.0.0.187-1. # pacman -Syu "lib32-flashplugin>=27.0.0.187-1" The problems have been fixed upstream in version 27.0.0.187. Workaround ========== None. Description =========== - CVE-2017-11213 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-11215 (arbitrary code execution) An use after free vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-11225 (arbitrary code execution) An use after free vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-3112 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-3114 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. Impact ====== A remote attacker is able to execute arbitrary code on the affected host via a specially crafted SWF file. References ========== https://helpx.adobe.com/security/products/flash-player/apsb17-33.html https://security.archlinux.org/CVE-2017-11213 https://security.archlinux.org/CVE-2017-11215 https://security.archlinux.org/CVE-2017-11225 https://security.archlinux.org/CVE-2017-3112 https://security.archlinux.org/CVE-2017-3114

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[arch-security] [ASA-201711-21] flashplugin: arbitrary code execution
by Levente Polyak 15 Nov '17

15 Nov '17

Arch Linux Security Advisory ASA-201711-21 ========================================== Severity: Critical Date : 2017-11-15 CVE-ID : CVE-2017-11213 CVE-2017-11215 CVE-2017-11225 CVE-2017-3112 CVE-2017-3114 Package : flashplugin Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-492 Summary ======= The package flashplugin before version 27.0.0.187-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 27.0.0.187-1. # pacman -Syu "flashplugin>=27.0.0.187-1" The problems have been fixed upstream in version 27.0.0.187. Workaround ========== None. Description =========== - CVE-2017-11213 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-11215 (arbitrary code execution) An use after free vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-11225 (arbitrary code execution) An use after free vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-3112 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. - CVE-2017-3114 (arbitrary code execution) An out-of-bounds access vulnerability has been discovered in flashplugin before 27.0.0.187 leading to arbitrary code execution when playing a specially crafted SWF file. Impact ====== A remote attacker is able to execute arbitrary code on the affected host via a specially crafted SWF file. References ========== https://helpx.adobe.com/security/products/flash-player/apsb17-33.html https://security.archlinux.org/CVE-2017-11213 https://security.archlinux.org/CVE-2017-11215 https://security.archlinux.org/CVE-2017-11225 https://security.archlinux.org/CVE-2017-3112 https://security.archlinux.org/CVE-2017-3114

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[arch-security] [ASA-201711-20] mediawiki: multiple issues
by Levente Polyak 15 Nov '17

15 Nov '17

Arch Linux Security Advisory ASA-201711-20 ========================================== Severity: High Date : 2017-11-15 CVE-ID : CVE-2017-0361 CVE-2017-8808 CVE-2017-8809 CVE-2017-8810 CVE-2017-8811 CVE-2017-8812 CVE-2017-8814 CVE-2017-8815 Package : mediawiki Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-490 Summary ======= The package mediawiki before version 1.29.2-1 is vulnerable to multiple issues including cross-site scripting, information disclosure, url request injection and insufficient validation. Resolution ========== Upgrade to 1.29.2-1. # pacman -Syu "mediawiki>=1.29.2-1" The problems have been fixed upstream in version 1.29.2. Workaround ========== None. Description =========== - CVE-2017-0361 (information disclosure) MediaWiki before 1.29.2 may leak passwords in plaintext. API parameters may now be marked as "sensitive" to keep their values out of the logs. - CVE-2017-8808 (cross-site scripting) MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 has XSS when the $wgShowExceptionDetails setting is false and the browser sends non-standard URL escaping. - CVE-2017-8809 (url request injection) api.php in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 has a Reflected File Download vulnerability. - CVE-2017-8810 (information disclosure) MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests. - CVE-2017-8811 (cross-site scripting) The implementation of raw message parameter expansion in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows HTML mangling attacks. - CVE-2017-8812 (insufficient validation) MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline. - CVE-2017-8814 (cross-site scripting) The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by "a lot of junk." - CVE-2017-8815 (cross-site scripting) The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attribute injection attacks via glossary rules. Impact ====== A remote attacker is able to perform a cross-side scripting attack by injecting javascript into the site, disclose information or perform a reflected file download attack. References ========== https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/0002… https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-April/000207.… https://phabricator.wikimedia.org/T125177 https://phabricator.wikimedia.org/T180488 https://github.com/wikimedia/mediawiki/commit/8b0220e81ba462d21d8e1facbe6ae… https://github.com/wikimedia/mediawiki/commit/59ce3456a8007d76875fe8fb21eff… https://phabricator.wikimedia.org/T178451 https://github.com/wikimedia/mediawiki/commit/1713ddeff12b263fb7634796dc029… https://phabricator.wikimedia.org/T128209 https://github.com/wikimedia/mediawiki/commit/9bf2c01ea238d0e71c56bad7341c8… https://phabricator.wikimedia.org/T134100 https://github.com/wikimedia/mediawiki/commit/e7ea90509c73c60b665b8f63e3bb9… https://phabricator.wikimedia.org/T176247 https://github.com/wikimedia/mediawiki/commit/410c00a9ae92411d3d1568e84c4aa… https://phabricator.wikimedia.org/T125163 https://github.com/wikimedia/mediawiki/commit/31041e4557c2f4b96ef0a16e44bf6… https://phabricator.wikimedia.org/T124404 https://github.com/wikimedia/mediawiki/commit/fbe78cfa094645b907d0fd2885c57… https://phabricator.wikimedia.org/T119158 https://github.com/wikimedia/mediawiki/commit/f21f3942eb10d7e688eb25261ac3a… https://security.archlinux.org/CVE-2017-0361 https://security.archlinux.org/CVE-2017-8808 https://security.archlinux.org/CVE-2017-8809 https://security.archlinux.org/CVE-2017-8810 https://security.archlinux.org/CVE-2017-8811 https://security.archlinux.org/CVE-2017-8812 https://security.archlinux.org/CVE-2017-8814 https://security.archlinux.org/CVE-2017-8815

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[arch-security] [ASA-201711-19] konversation: denial of service
by Morten Linderud 14 Nov '17

14 Nov '17

Arch Linux Security Advisory ASA-201711-19 ========================================== Severity: Medium Date : 2017-11-12 CVE-ID : CVE-2017-15923 Package : konversation Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-489 Summary ======= The package konversation before version 1.7.3-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.7.3-1. # pacman -Syu "konversation>=1.7.3-1" The problem has been fixed upstream in version 1.7.3. Workaround ========== Go to Interface -> Colors in the Configure Konversation dialog and uncheck Allow Colored Text in IRC Messages (near the bottom) Description =========== A denial of service vulnerability has been discovered in Konversation before 1.7.3 when handling colors in IRC messages. Any malicious user connected to the same IRC network could send a carefully crafted message that would crash the Konversation user client. Impact ====== A remote attacker is able to craft messages that can result in the client crashing. References ========== https://www.kde.org/info/security/advisory-20171112-1.txt https://cgit.kde.org/konversation.git/commit/?h=1.7&id=34cc9556c1a089fac6b6… https://security.archlinux.org/CVE-2017-15923

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[arch-security] [ASA-201711-18] postgresql-old-upgrade: multiple issues
by Levente Polyak 10 Nov '17

10 Nov '17

Arch Linux Security Advisory ASA-201711-18 ========================================== Severity: Medium Date : 2017-11-10 CVE-ID : CVE-2017-15098 CVE-2017-15099 Package : postgresql-old-upgrade Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-486 Summary ======= The package postgresql-old-upgrade before version 9.6.6-1 is vulnerable to multiple issues including access restriction bypass and information disclosure. Resolution ========== Upgrade to 9.6.6-1. # pacman -Syu "postgresql-old-upgrade>=9.6.6-1" The problems have been fixed upstream in version 9.6.6. Workaround ========== None. Description =========== - CVE-2017-15098 (information disclosure) A denial of service and potential memory disclosure vulnerability has been discovered in PostgreSQL in the json_populate_recordset() and jsonb_populate_recordset() functions. - CVE-2017-15099 (access restriction bypass) An access restriction bypass vulnerability has been discovered in PostgreSQL, the "INSERT ... ON CONFLICT DO UPDATE" would not check to see if the executing user had permission to perform a "SELECT" on the index performing the conflicting check. Additionally, in a table with row-level security enabled, the "INSERT ... ON CONFLICT DO UPDATE" would not check the SELECT policies for that table before performing the update. The fix ensures that "INSERT ... ON CONFLICT DO UPDATE" checks against table permissions and RLS policies before executing. Impact ====== A remote attacker is able to bypass access restrictions via certain queries or possibly leak sensitive information from the running process. References ========== https://www.postgresql.org/about/news/1801/ https://security.archlinux.org/CVE-2017-15098 https://security.archlinux.org/CVE-2017-15099

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[arch-security] [ASA-201711-17] postgresql: multiple issues
by Levente Polyak 10 Nov '17

10 Nov '17

Arch Linux Security Advisory ASA-201711-17 ========================================== Severity: Medium Date : 2017-11-10 CVE-ID : CVE-2017-15098 CVE-2017-15099 Package : postgresql Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-485 Summary ======= The package postgresql before version 10.1-1 is vulnerable to multiple issues including access restriction bypass and information disclosure. Resolution ========== Upgrade to 10.1-1. # pacman -Syu "postgresql>=10.1-1" The problems have been fixed upstream in version 10.1. Workaround ========== None. Description =========== - CVE-2017-15098 (information disclosure) A denial of service and potential memory disclosure vulnerability has been discovered in PostgreSQL in the json_populate_recordset() and jsonb_populate_recordset() functions. - CVE-2017-15099 (access restriction bypass) An access restriction bypass vulnerability has been discovered in PostgreSQL, the "INSERT ... ON CONFLICT DO UPDATE" would not check to see if the executing user had permission to perform a "SELECT" on the index performing the conflicting check. Additionally, in a table with row-level security enabled, the "INSERT ... ON CONFLICT DO UPDATE" would not check the SELECT policies for that table before performing the update. The fix ensures that "INSERT ... ON CONFLICT DO UPDATE" checks against table permissions and RLS policies before executing. Impact ====== A remote attacker is able to bypass access restrictions via certain queries or possibly leak sensitive information from the running process. References ========== https://www.postgresql.org/about/news/1801/ https://security.archlinux.org/CVE-2017-15098 https://security.archlinux.org/CVE-2017-15099

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[arch-security] [ASA-201711-16] libextractor: denial of service
by Levente Polyak 10 Nov '17

10 Nov '17

Arch Linux Security Advisory ASA-201711-16 ========================================== Severity: Low Date : 2017-11-08 CVE-ID : CVE-2017-15922 Package : libextractor Type : denial of service Remote : No Link : https://security.archlinux.org/AVG-471 Summary ======= The package libextractor before version 1.6-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.6-1. # pacman -Syu "libextractor>=1.6-1" The problem has been fixed upstream in version 1.6. Workaround ========== None. Description =========== In GNU Libextractor before 1.6, there is an out-of-bounds read in the EXTRACTOR_dvi_extract_method function in plugins/dvi_extractor.c. Impact ====== An attacker is able to crash the application by providing a crafted DVI file. References ========== http://lists.gnu.org/archive/html/bug-libextractor/2017-10/msg00008.html https://security.archlinux.org/CVE-2017-15922

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[arch-security] [ASA-201711-15] lib32-openssl: multiple issues
by Levente Polyak 10 Nov '17

10 Nov '17

Arch Linux Security Advisory ASA-201711-15 ========================================== Severity: Medium Date : 2017-11-08 CVE-ID : CVE-2017-3735 CVE-2017-3736 Package : lib32-openssl Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-478 Summary ======= The package lib32-openssl before version 1:1.1.0.g-1 is vulnerable to multiple issues including information disclosure and denial of service. Resolution ========== Upgrade to 1:1.1.0.g-1. # pacman -Syu "lib32-openssl>=1:1.1.0.g-1" The problems have been fixed upstream in version 1.1.0.g. Workaround ========== None. Description =========== - CVE-2017-3735 (denial of service) A security issue has been found in OpenSSL < 1.1.0g. If an X.509 certificate has a malformed IPAddressFamily extension, OpenSSL could do a one-byte buffer overread. The most likely result would be an erroneous display of the certificate in text format. - CVE-2017-3736 (information disclosure) A carry propagation bug has been found in OpenSSL < 1.1.0g in the x86_64 Montgomery squaring procedure. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen. Impact ====== A remote attacker can cause a denial of service via a crafted X.509 certificate. A remote attacker with access to a large amount of resources might be able to retrieve a private key, depending on the kind of processor used. References ========== https://www.openssl.org/news/vulnerabilities.html#2017-3735 https://www.openssl.org/news/secadv/20170828.txt https://github.com/openssl/openssl/commit/b23171744b01e473ebbfd6edad70c1c38… https://www.openssl.org/news/vulnerabilities.html#2017-3736 https://www.openssl.org/news/secadv/20171102.txt https://github.com/openssl/openssl/commit/668a709a8d7ea374ee72ad2d43ac72ec6… https://security.archlinux.org/CVE-2017-3735 https://security.archlinux.org/CVE-2017-3736

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[arch-security] [ASA-201711-14] openssl: multiple issues
by Remi Gacogne 08 Nov '17

08 Nov '17

Arch Linux Security Advisory ASA-201711-14 ========================================== Severity: Medium Date : 2017-11-07 CVE-ID : CVE-2017-3735 CVE-2017-3736 Package : openssl Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-477 Summary ======= The package openssl before version 1.1.0.g-1 is vulnerable to multiple issues including information disclosure and denial of service. Resolution ========== Upgrade to 1.1.0.g-1. # pacman -Syu "openssl>=1.1.0.g-1" The problems have been fixed upstream in version 1.1.0.g. Workaround ========== None. Description =========== - CVE-2017-3735 (denial of service) A security issue has been found in OpenSSL < 1.1.0g. If an X.509 certificate has a malformed IPAddressFamily extension, OpenSSL could do a one-byte buffer overread. The most likely result would be an erroneous display of the certificate in text format. - CVE-2017-3736 (information disclosure) A carry propagation bug has been found in OpenSSL < 1.1.0g in the x86_64 Montgomery squaring procedure. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen. Impact ====== A remote attacker can cause a denial of service via a crafted X.509 certificate. A remote attacker with access to a large amount of resources might be able to retrieve a private key, depending on the kind of processor used. References ========== https://www.openssl.org/news/vulnerabilities.html#2017-3735 https://www.openssl.org/news/secadv/20170828.txt https://github.com/openssl/openssl/commit/b23171744b01e473ebbfd6edad70c1c38… https://www.openssl.org/news/vulnerabilities.html#2017-3736 https://www.openssl.org/news/secadv/20171102.txt https://github.com/openssl/openssl/commit/668a709a8d7ea374ee72ad2d43ac72ec6… https://security.archlinux.org/CVE-2017-3735 https://security.archlinux.org/CVE-2017-3736

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