- Arch-security - lists.archlinux.org

[ASA-201910-2] ruby: multiple issues
by Levente Polyak 03 Oct '19

03 Oct '19

Arch Linux Security Advisory ASA-201910-2 ========================================= Severity: Medium Date : 2019-10-02 CVE-ID : CVE-2019-15845 CVE-2019-16201 CVE-2019-16254 CVE-2019-16255 Package : ruby Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1039 Summary ======= The package ruby before version 2.6.5-1 is vulnerable to multiple issues including arbitrary code execution, content spoofing, denial of service and insufficient validation. Resolution ========== Upgrade to 2.6.5-1. # pacman -Syu "ruby>=2.6.5-1" The problems have been fixed upstream in version 2.6.5. Workaround ========== None. Description =========== - CVE-2019-15845 (insufficient validation) It has been discovered that Ruby before 2.4.8, 2.5.7 and 2.6.5 is vulnerable to NUL injection in built-in methods (File.fnmatch and File.fnmatch?). An attacker who has the control of the path pattern parameter could exploit this vulnerability to make path matching pass despite the intention of the program author. The Built-in methods File.fnmatch and its alias File.fnmatch? accept the path pattern as their first parameter. When the pattern contains NUL character (\0), the methods recognize that the path pattern ends immediately before the NUL byte. Therefore, a script that uses an external input as the pattern argument, an attacker can make it wrongly match a pathname that is the second parameter. - CVE-2019-16201 (denial of service) It has been discovered that Ruby before 2.4.8, 2.5.7 and 2.6.5 is vulnerable to denial of service via regular expressions in WEBrick's Digest access authentication module. An attacker can exploit this vulnerability to cause an effective denial of service against a WEBrick service. - CVE-2019-16254 (content spoofing) It has been discovered that Ruby before 2.4.8, 2.5.7 and 2.6.5 is vulnerable to HTTP response splitting in WEBrick bundled with Ruby. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. This is the same issue as CVE-2017-17742. The previous fix was incomplete, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF. - CVE-2019-16255 (arbitrary code execution) It has been discovered that Ruby before 2.4.8, 2.5.7 and 2.6.5 is vulnerable to code injection. Shell#[] and its alias Shell#test defined in lib/shell.rb allow code injection if the first argument (aka the “command” argument) is untrusted data. An attacker can exploit this to call an arbitrary Ruby method. Impact ====== A remote attacker is able to bypass path restrictions, perform a denial of service attack, inject malicious content or call an arbitrary Ruby method under certain circumstances. References ========== https://bugs.archlinux.org/task/63977 https://www.ruby-lang.org/en/news/2019/10/01/ruby-2-6-5-released/ https://www.ruby-lang.org/en/news/2019/10/01/nul-injection-file-fnmatch-cve… https://www.ruby-lang.org/en/news/2019/10/01/webrick-regexp-digestauth-dos-… https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-web… https://www.ruby-lang.org/en/news/2019/10/01/code-injection-shell-test-cve-… https://security.archlinux.org/CVE-2019-15845 https://security.archlinux.org/CVE-2019-16201 https://security.archlinux.org/CVE-2019-16254 https://security.archlinux.org/CVE-2019-16255

1 0

[ASA-201910-1] exim: arbitrary code execution
by Levente Polyak 03 Oct '19

03 Oct '19

Arch Linux Security Advisory ASA-201910-1 ========================================= Severity: Critical Date : 2019-10-02 CVE-ID : CVE-2019-16928 Package : exim Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1038 Summary ======= The package exim before version 4.92.3-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 4.92.3-1. # pacman -Syu "exim>=4.92.3-1" The problem has been fixed upstream in version 4.92.3. Workaround ========== None. Description =========== It has been discovered that Exim before 4.92.3 is vulnerable to a heap- based buffer overflow in string_vformat (string.c) involving a long EHLO command leading to remote code execution. Impact ====== A remote attacker is able to execute arbitrary code on the affected host by sending a specifically crafted long EHLO command. References ========== https://www.exim.org/static/doc/security/CVE-2019-16928.txt https://bugs.exim.org/show_bug.cgi?id=2449 https://git.exim.org/exim.git/commitdiff/478effbfd9c3cc5a627fc671d4bf94d136… https://www.openwall.com/lists/oss-security/2019/09/28/1 https://security.archlinux.org/CVE-2019-16928

1 0

[ASA-201909-3] exim: arbitrary command execution
by Jelle van der Waa 11 Sep '19

11 Sep '19

Arch Linux Security Advisory ASA-201909-3 ========================================= Severity: Critical Date : 2019-09-06 CVE-ID : CVE-2019-15846 Package : exim Type : arbitrary command execution Remote : Yes Link : https://security.archlinux.org/AVG-1037 Summary ======= The package exim before version 4.92.2-1 is vulnerable to arbitrary command execution. Resolution ========== Upgrade to 4.92.2-1. # pacman -Syu "exim>=4.92.2-1" The problem has been fixed upstream in version 4.92.2. Workaround ========== None. Description =========== Exim before 4.92.2 allows remote attackers to execute arbitrary code as root via a trailing backslash. Impact ====== A remote attacker is able to execute arbitrary commands with root privileges. References ========== https://exim.org/static/doc/security/CVE-2019-15846.txt https://security.archlinux.org/CVE-2019-15846

1 0

[ASA-201909-2] firefox: multiple issues
by Jelle van der Waa 11 Sep '19

11 Sep '19

Arch Linux Security Advisory ASA-201909-2 ========================================= Severity: High Date : 2019-09-04 CVE-ID : CVE-2019-5849 CVE-2019-9812 CVE-2019-11734 CVE-2019-11735 CVE-2019-11737 CVE-2019-11738 CVE-2019-11740 CVE-2019-11741 CVE-2019-11742 CVE-2019-11743 CVE-2019-11744 CVE-2019-11746 CVE-2019-11747 CVE-2019-11748 CVE-2019-11749 CVE-2019-11750 CVE-2019-11752 Package : firefox Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1036 Summary ======= The package firefox before version 69.0-1 is vulnerable to multiple issues including arbitrary code execution, cross-site scripting, same- origin policy bypass, sandbox escape, access restriction bypass, denial of service and information disclosure. Resolution ========== Upgrade to 69.0-1. # pacman -Syu "firefox>=69.0-1" The problems have been fixed upstream in version 69.0. Workaround ========== None. Description =========== - CVE-2019-5849 (information disclosure) An out-of-bounds read vulnerability exists in the Skia graphics library shipped in Firefox before 69.0, allowing for the possible leaking of data from memory. - CVE-2019-9812 (sandbox escape) In Firefox before 69.0, given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered. - CVE-2019-11734 (arbitrary code execution) Several memory safety bugs have been found in Firefox before 69.0. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could be exploited to run arbitrary code. - CVE-2019-11735 (arbitrary code execution) Several memory safety bugs have been found in Firefox before 69.0. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could be exploited to run arbitrary code. - CVE-2019-11737 (access restriction bypass) In Firefox before 69.0, if a wildcard ('*') is specified for the host in Content Security Policy (CSP) directives, any port or path restriction of the directive will be ignored, leading to CSP directives not being properly applied to content. - CVE-2019-11738 (access restriction bypass) In Firefox before 69.0, if a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. - CVE-2019-11740 (arbitrary code execution) Several memory safety bugs have been found in Firefox before 69.0. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could be exploited to run arbitrary code. - CVE-2019-11741 (cross-site scripting) In Firefox before 69.0, a compromised sandboxed content process can perform a Universal Cross-site Scripting (UXSS) attack on content from any site it can cause to be loaded in the same process. Because addons.mozilla.org and accounts.firefox.com have close ties to the Firefox product, malicious manipulation of these sites within the browser can potentially be used to modify a user's Firefox configuration. These two sites will now be isolated into their own process and not allowed to be loaded in a standard content process. - CVE-2019-11742 (same-origin policy bypass) A same-origin policy violation can occur in Firefox before 69.0, allowing the theft of cross-origin images through a combination of SVG filters and a <canvas> element due to an error in how same-origin policy is applied to cached image content. The resulting same-origin policy violation could allow for data theft. - CVE-2019-11743 (information disclosure) In Firefox before 69.0, navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload event, which restricts access to detailed timing attributes to only be same-origin. This resulted in potential cross-origin information exposure of history through timing side- channel attacks. - CVE-2019-11744 (cross-site scripting) A security issue has been found in Firefox before 69.0. Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. - CVE-2019-11746 (arbitrary code execution) A use-after-free vulnerability can occur in Firefox before 69.0 while manipulating video elements if the body is freed while still in use. This results in a potentially exploitable crash. - CVE-2019-11747 (access restriction bypass) The "Forget about this site" feature in the History pane is intended to remove all saved user data that indicates a user has visited a site. This includes removing any HTTP Strict Transport Security (HSTS) settings received from sites that use it. Due to a bug in Firefox before 69.0, sites on the pre-load list also have their HSTS setting removed. On the next visit to that site if the user specifies an http: URL rather than secure https: they will not be protected by the pre- loaded HSTS setting. After that visit the site's HSTS setting will be restored. - CVE-2019-11748 (access restriction bypass) WebRTC in Firefox before 69.0 will honor persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. In light of recent high profile vulnerabilities in other software, a decision was made to no longer persist these permissions. This avoids the possibility of trusted WebRTC resources being invisibly embedded in web content and abusing permissions previously given by users. Users will now be prompted for permissions on each use. - CVE-2019-11749 (information disclosure) A vulnerability exists in the WebRTC component of Firefox before 69.0 where malicious web content can use probing techniques on the getUserMedia API using constraints to reveal device properties of cameras on the system without triggering a user prompt or notification. This allows for the potential fingerprinting of users. - CVE-2019-11750 (denial of service) A type confusion vulnerability exists in the Spidermonkey component of Firefox before 69.0, which results in a non-exploitable crash. - CVE-2019-11752 (arbitrary code execution) In Firefox before 69.0, it is possible to delete an IndexedDB key value and subsequently try to extract it during conversion. This results in a use-after-free and a potentially exploitable crash. Impact ====== A remote attacker can bypass security measures, access sensitive information or execute arbitrary code on the affected host. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/ https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-5849 https://bugzilla.mozilla.org/show_bug.cgi?id=1555838 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-9812 https://bugzilla.mozilla.org/show_bug.cgi?id=1538008 https://bugzilla.mozilla.org/show_bug.cgi?id=1538015 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/buglist.cgi?bug_id=1352875%2C1536227%2C1557208… https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/buglist.cgi?bug_id=1561404%2C1561484%2C1568047… https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1388015 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1452037 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/buglist.cgi?bug_id=1563133%2C1573160 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1539595 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1559715 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1560495 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1562033 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1564449 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1564481 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1564588 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1565374 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1568397 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-117… https://bugzilla.mozilla.org/show_bug.cgi?id=1501152 https://security.archlinux.org/CVE-2019-5849 https://security.archlinux.org/CVE-2019-9812 https://security.archlinux.org/CVE-2019-11734 https://security.archlinux.org/CVE-2019-11735 https://security.archlinux.org/CVE-2019-11737 https://security.archlinux.org/CVE-2019-11738 https://security.archlinux.org/CVE-2019-11740 https://security.archlinux.org/CVE-2019-11741 https://security.archlinux.org/CVE-2019-11742 https://security.archlinux.org/CVE-2019-11743 https://security.archlinux.org/CVE-2019-11744 https://security.archlinux.org/CVE-2019-11746 https://security.archlinux.org/CVE-2019-11747 https://security.archlinux.org/CVE-2019-11748 https://security.archlinux.org/CVE-2019-11749 https://security.archlinux.org/CVE-2019-11750 https://security.archlinux.org/CVE-2019-11752

1 0

[ASA-201909-1] webkit2gtk: multiple issues
by Jelle van der Waa 11 Sep '19

11 Sep '19

Arch Linux Security Advisory ASA-201909-1 ========================================= Severity: Critical Date : 2019-09-04 CVE-ID : CVE-2019-8644 CVE-2019-8649 CVE-2019-8658 CVE-2019-8669 CVE-2019-8678 CVE-2019-8680 CVE-2019-8683 CVE-2019-8684 CVE-2019-8688 Package : webkit2gtk Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1033 Summary ======= The package webkit2gtk before version 2.24.4-1 is vulnerable to multiple issues including arbitrary code execution and cross-site scripting. Resolution ========== Upgrade to 2.24.4-1. # pacman -Syu "webkit2gtk>=2.24.4-1" The problems have been fixed upstream in version 2.24.4. Workaround ========== None. Description =========== - CVE-2019-8644 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8649 (cross-site scripting) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to universal cross site scripting. - CVE-2019-8658 (cross-site scripting) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to universal cross site scripting. - CVE-2019-8669 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8678 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8680 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8683 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8684 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. - CVE-2019-8688 (arbitrary code execution) An issue has been found in WebKitGTK before 2.24.4 where processing maliciously crafted web content may lead to arbitrary code execution. Impact ====== A remote attacker can bypass security restrictions via universal cross- site scripting or execute arbitrary code via crafted web content. References ========== https://webkitgtk.org/security/WSA-2019-0004.html https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8644 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8649 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8658 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8669 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8678 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8680 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8683 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8684 https://webkitgtk.org/security/WSA-2019-0004.html#CVE-2019-8688 https://security.archlinux.org/CVE-2019-8644 https://security.archlinux.org/CVE-2019-8649 https://security.archlinux.org/CVE-2019-8658 https://security.archlinux.org/CVE-2019-8669 https://security.archlinux.org/CVE-2019-8678 https://security.archlinux.org/CVE-2019-8680 https://security.archlinux.org/CVE-2019-8683 https://security.archlinux.org/CVE-2019-8684 https://security.archlinux.org/CVE-2019-8688

1 0

[ASA-201908-22] jenkins: multiple issues
by Remi Gacogne 04 Sep '19

04 Sep '19

Arch Linux Security Advisory ASA-201908-22 ========================================== Severity: Medium Date : 2019-08-30 CVE-ID : CVE-2019-10383 CVE-2019-10384 Package : jenkins Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1030 Summary ======= The package jenkins before version 2.192-1 is vulnerable to multiple issues including cross-site request forgery and cross-site scripting. Resolution ========== Upgrade to 2.192-1. # pacman -Syu "jenkins>=2.192-1" The problems have been fixed upstream in version 2.192. Workaround ========== None. Description =========== - CVE-2019-10383 (cross-site scripting) Jenkins did not properly escape the update site URL in some status messages shown in the update center, resulting in a stored cross-site scripting vulnerability that is exploitable by administrators and affects other administrators. - CVE-2019-10384 (cross-site request forgery) Jenkins allowed the creation of CSRF tokens without a corresponding web session ID. This is the result of an incomplete fix for SECURITY-626 in the 2019-07-17 security advisory. This allowed attackers able to obtain a CSRF token without associated session ID to implement CSRF attacks with the following constraints. The token had to be created for the anonymous user (and could only be used for actions the anonymous user can perform). The victim’s IP address needed to remain unchanged (unless the proxy compatibility option was enabled) The victim must not have a valid web session at the time of the attack. CSRF token generation now creates a web session if none exists yet, so that the lack of a web session ID cannot be exploited. Impact ====== An attacker with administrative access can execute XSS attacks on other administrators by using crafted status messages on the update center. Further, an attacker is able to execute a CSRF attack under a very narrow set of constraints. References ========== https://jenkins.io/security/advisory/2019-08-28/ https://security.archlinux.org/CVE-2019-10383 https://security.archlinux.org/CVE-2019-10384

1 0

[ASA-201908-21] grafana: denial of service
by Remi Gacogne 04 Sep '19

04 Sep '19

Arch Linux Security Advisory ASA-201908-21 ========================================== Severity: Medium Date : 2019-08-30 CVE-ID : CVE-2019-15043 Package : grafana Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-1034 Summary ======= The package grafana before version 6.3.4-1 is vulnerable to denial of service. Resolution ========== Upgrade to 6.3.4-1. # pacman -Syu "grafana>=6.3.4-1" The problem has been fixed upstream in version 6.3.4. Workaround ========== None. Description =========== This vulnerability allows any unauthenticated user/client to access the Grafana snapshot HTTP API and create a denial of service attack by posting large amounts of dashboard snapshot payloads to the /api/snapshotsHTTP API endpoint. Impact ====== A remote attacker is able to cause a denial of service by sending a specially crafted request. References ========== https://grafana.com/blog/2019/08/29/grafana-5.4.5-and-6.3.4-released-with-i… https://github.com/grafana/grafana/commit/be2e2330f5c1f92082841d7eb13c55831… https://security.archlinux.org/CVE-2019-15043

1 0

[ASA-201908-20] irssi: arbitrary code execution
by Santiago Torres-Arias 03 Sep '19

03 Sep '19

Arch Linux Security Advisory ASA-201908-20 ========================================== Severity: High Date : 2019-08-29 CVE-ID : CVE-2019-15717 Package : irssi Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1028 Summary ======= The package irssi before version 1.2.2-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 1.2.2-1. # pacman -Syu "irssi>=1.2.2-1" The problem has been fixed upstream in version 1.2.2. Workaround ========== None. Description =========== Use after free when receiving duplicate CAP found. Impact ====== A remote malicious IRC server can cause a denial of service and potentially arbitrary code execution by sending a duplicate CAP message. References ========== https://irssi.org/security/irssi_sa_2019_08.txt https://github.com/irssi/irssi/commit/401fff7c34acaff2f7b0d6ab31bda7fa8cc50… https://security.archlinux.org/CVE-2019-15717

1 0

[ASA-201908-19] pigeonhole: arbitrary code execution
by Jelle van der Waa 29 Aug '19

29 Aug '19

Arch Linux Security Advisory ASA-201908-19 ========================================== Severity: Critical Date : 2019-08-28 CVE-ID : CVE-2019-11500 Package : pigeonhole Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1027 Summary ======= The package pigeonhole before version 0.5.7.2-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 0.5.7.2-1. # pacman -Syu "pigeonhole>=0.5.7.2-1" The problem has been fixed upstream in version 0.5.7.2. Workaround ========== None. Description =========== IMAP and ManageSieve protocol parsers in Dovecot before 2.3.7.2 and Pigeonhole before 0.5.7.2 do not properly handle NUL byte when scanning data in quoted strings, leading to out of bounds heap memory writes. Impact ====== A remote, unauthenticated attacker can access sensitive information or execute arbitrary code on the affected host via a crafted ManageSieve command. References ========== https://dovecot.org/pipermail/dovecot-news/2019-August/000417.html https://dovecot.org/pipermail/dovecot-news/2019-August/000418.html https://github.com/dovecot/core/commit/85fcb895ca7f0bcb8ee72047fe0e1e78532f… https://github.com/dovecot/core/commit/f904cbdfec25582bc5e2a7435bf82ff769f2… https://github.com/dovecot/pigeonhole/commit/7ce9990a5e6ba59e89b7fe1c07f574… https://github.com/dovecot/pigeonhole/commit/4a299840cdb51f61f8d1ebc0210b19… https://security.archlinux.org/CVE-2019-11500

1 0

[ASA-201908-18] dovecot: arbitrary code execution
by Jelle van der Waa 29 Aug '19

29 Aug '19

Arch Linux Security Advisory ASA-201908-18 ========================================== Severity: Critical Date : 2019-08-28 CVE-ID : CVE-2019-11500 Package : dovecot Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1026 Summary ======= The package dovecot before version 2.3.7.2-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 2.3.7.2-1. # pacman -Syu "dovecot>=2.3.7.2-1" The problem has been fixed upstream in version 2.3.7.2. Workaround ========== None. Description =========== IMAP and ManageSieve protocol parsers in Dovecot before 2.3.7.2 and Pigeonhole before 0.5.7.2 do not properly handle NUL byte when scanning data in quoted strings, leading to out of bounds heap memory writes. Impact ====== A remote, unauthenticated attacker can access sensitive information or execute arbitrary code on the affected host via a crafted IMAP command. References ========== https://dovecot.org/pipermail/dovecot-news/2019-August/000418.html https://github.com/dovecot/core/commit/85fcb895ca7f0bcb8ee72047fe0e1e78532f… https://github.com/dovecot/core/commit/f904cbdfec25582bc5e2a7435bf82ff769f2… https://github.com/dovecot/pigeonhole/commit/7ce9990a5e6ba59e89b7fe1c07f574… https://github.com/dovecot/pigeonhole/commit/4a299840cdb51f61f8d1ebc0210b19… https://security.archlinux.org/CVE-2019-11500

1 0