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[arch-security] [ASA-201507-9] thunderbird: multiple issues
by Remi Gacogne 11 Jul '15

11 Jul '15

Arch Linux Security Advisory ASA-201507-9 ========================================= Severity: High Date : 2015-07-11 CVE-ID : CVE-2015-2724 CVE-2015-2725 CVE-2015-2726 CVE-2015-2731 CVE-2015-2734 CVE-2015-2735 CVE-2015-2736 CVE-2015-2737 CVE-2015-2738 CVE-2015-2739 CVE-2015-2740 CVE-2015-2741 Package : thunderbird Type : multiple issues Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package thunderbird before version 38.1.0-1 is vulnerable to multiple issues, including remote code execution and key pinning bypass. Resolution ========== Upgrade to 38.1.0-1. # pacman -Syu "thunderbird>=38.1.0-1" The problem has been fixed upstream in version 38.1.0. Workaround ========== None. Description =========== - CVE-2015-2724, CVE-2015-2725, CVE-2015-2726 (Miscellaneous memory safety hazards): Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code. In general these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled, but are potentially a risk in browser or browser-like contexts. - CVE-2015-2731 (Use-after-free in Content Policy due to microtask execution error): Security researcher Herre reported a use-after-free vulnerability when a Content Policy modifies the Document Object Model to remove a DOM object, which is then used afterwards due to an error in microtask implementation. This leads to an exploitable crash. In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts. - CVE-2015-2734, CVE-2015-2735, CVE-2015-2736, CVE-2015-2737, CVE-2015-2738, CVE-2015-2739, CVE-2015-2740 (Vulnerabilities found through code inspection): Security researcher Ronald Crane reported seven vulnerabilities affecting released code that he found through code inspection. These included three uses of uninitialized memory, one poor validation leading to an exploitable crash, one read of unowned memory in zip files, and two buffer overflows. These do not all have clear mechanisms to be exploited through web content but are vulnerable if a mechanism can be found to trigger them. - CVE-2015-2741 (Key pinning is ignored when overridable errors are encountered): Mozilla security engineer David Keeler reported that when an overridable error is encountered, such as those for expired certificates or a host name does not match a certificate, pinning checks can be be skipped. This would allow for a user to override a pinned certificate when they should not be able to do so. This issue does not allow for third parties to cause a certificate to be overridden and the user would still have to manually do so. In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts. Impact ====== A remote adversary may be able to execute arbitrary code, or trick user into bypassing key pinning. References ========== https://www.mozilla.org/en-US/security/known-vulnerabilities/thunderbird/#t… https://www.mozilla.org/en-US/security/advisories/mfsa2015-59/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-63/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-66/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-67/ https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2724 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2725 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2726 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2731 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2734 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2735 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2736 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2737 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2738 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2739 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2740 https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2741

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[arch-security] [ASA-201507-8] openssl: man-in-the-middle
by Levente Polyak 09 Jul '15

09 Jul '15

Arch Linux Security Advisory ASA-201507-8 ========================================= Severity: High Date : 2015-07-09 CVE-ID : CVE-2015-1793 Package : openssl Type : man-in-the-middle Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package openssl before version 1.0.2.d-1 is vulnerable to man-in-the-middle. Resolution ========== Upgrade to 1.0.2.d-1. # pacman -Syu "openssl>=1.0.2.d-1" The problem has been fixed upstream in version 1.0.2.d. Workaround ========== None. Description =========== During certificate verification, OpenSSL will attempt to find an alternative certificate chain if the first attempt to build such a chain fails. An error in the implementation of this logic can mean that an attacker could cause certain checks on untrusted certificates to be bypassed, such as the CA flag, enabling them to use a valid leaf certificate to act as a CA and "issue" an invalid certificate. This issue will impact any application that verifies certificates including SSL/TLS/DTLS clients and SSL/TLS/DTLS servers using client authentication. Impact ====== A remote attacker is able to use a valid leaf certificate to act as a CA and "issue" an invalid certificate that behaves valid to possibly perform a man-in-the-middle attack. References ========== https://openssl.org/news/secadv_20150709.txt https://access.redhat.com/security/cve/CVE-2015-1793

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[arch-security] [ASA-201507-7] flashplugin: remote code execution
by Remi Gacogne 08 Jul '15

08 Jul '15

Arch Linux Security Advisory ASA-201507-7 ========================================= Severity: Critical Date : 2015-07-08 CVE-ID : CVE-2015-5119 Package : flashplugin Type : remote code execution Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package flashplugin before version 11.2.202.481-1 is vulnerable to remote code execution. Resolution ========== Upgrade to 11.2.202.481-1. # pacman -Syu "flashplugin>=11.2.202.481-1" The problem has been fixed upstream in version 11.2.202.481. Workaround ========== None. Description =========== A critical vulnerability (use-after-free in the AS3 ByteArray class) has been identified in Adobe Flash Player 18.0.0.194 and earlier versions for Windows, Macintosh and Linux. Successful exploitation could cause a crash and potentially allow an attacker to take control of the affected system. Adobe is aware of reports that an exploit targeting this vulnerability has been published publicly. Impact ====== A remote attacker can execute arbitrary code on the affected host using a crafted flash application. References ========== https://access.redhat.com/security/cve/CVE-2015-5119 https://helpx.adobe.com/security/products/flash-player/apsa15-03.html https://www.kb.cert.org/vuls/id/561288 http://blog.trendmicro.com/trendlabs-security-intelligence/unpatched-flash-…

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[arch-security] [ASA-201507-6] bind: denial of service
by Remi Gacogne 07 Jul '15

07 Jul '15

Arch Linux Security Advisory ASA-201507-6 ========================================= Severity: High Date : 2015-07-07 CVE-ID : CVE-2015-4620 Package : bind Type : denial of service Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package bind before version 9.10.2.P2-1 is vulnerable to denial of service. Resolution ========== Upgrade to 9.10.2.P2-1. # pacman -Syu "bind>=9.10.2.P2-1" The problem has been fixed upstream in version 9.10.2.P2. Workaround ========== Disabling DNSSEC validation prevents exploitation of this defect but is not generally recommended. The recommended solution is to upgrade to a patched version. DNSSEC validation can be disabled by setting dnssec-validation no; in the "options" section of /etc/named.conf Description =========== A very uncommon combination of zone data has been found that triggers a bug in BIND, with the result that named will exit with a "REQUIRE" failure in name.c when validating the data returned in answer to a recursive query. This means that a recursive resolver that is performing DNSSEC validation can be deliberately stopped by an attacker who can cause the resolver to perform a query against a maliciously-constructed zone. Impact ====== A remote attacker can crash a bind resolver performing DNSSEC validation by querying it for a specially crafted zone. References ========== https://kb.isc.org/article/AA-01267/ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4620

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[arch-security] [ASA-201507-5] ntp: denial of service
by Levente Polyak 07 Jul '15

07 Jul '15

Arch Linux Security Advisory ASA-201507-5 ========================================= Severity: Low Date : 2015-07-07 CVE-ID : CVE-2015-5146 Package : ntp Type : denial of service Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package ntp before version 4.2.8.p3-1 is vulnerable to denial of service. Resolution ========== Upgrade to 4.2.8.p3-1. # pacman -Syu "ntp>=4.2.8.p3-1" The problem has been fixed upstream in version 4.2.8.p3. Workaround ========== Configure ntpd to not allow remote configuration (default setting). Description =========== Under limited and specific circumstances an attacker can send a crafted remote-configuration packet containing a NUL-byte to cause a vulnerable ntpd instance to crash. This requires each of the following to be true: - ntpd set up to allow for remote configuration (not allowed by default) - knowledge of the configuration password - access to a computer entrusted to perform remote configuration Impact ====== A remote attacker is able to send a specially crafted remote-configuration packet that is leading to an application crash resulting in denial of service. References ========== https://support.ntp.org/bin/view/Main/SecurityNotice#June_2015_NTP_Security… https://access.redhat.com/security/cve/CVE-2015-5146

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[arch-security] [ASA-201507-4] openssh: XSECURITY restrictions bypass
by Levente Polyak 04 Jul '15

04 Jul '15

Arch Linux Security Advisory ASA-201507-4 ========================================= Severity: Medium Date : 2015-07-04 CVE-ID : CVE-2015-5352 Package : openssh Type : XSECURITY restrictions bypass Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package openssh before version 6.9p1-1 is vulnerable to XSECURITY restrictions bypass. Resolution ========== Upgrade to 6.9p1-1. # pacman -Syu "openssh>=6.9p1-1" The problem has been fixed upstream in version 6.9p1. Workaround ========== None. Description =========== When forwarding X11 connections with ForwardX11Trusted=no, connections made after ForwardX11Timeout expired could be permitted and no longer subject to XSECURITY restrictions because of an ineffective timeout check in ssh coupled with "fail open" behaviour in the X11 server when clients attempted connections with expired credentials. This problem was reported by Jann Horn. Impact ====== A remote attacker is able to bypass the XSECURITY restrictions when forwarding X11 connections by making use of an ineffective timeout check. References ========== http://www.openssh.com/txt/release-6.9 https://access.redhat.com/security/cve/CVE-2015-5352

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[arch-security] [ASA-201507-3] haproxy: information leakage
by Remi Gacogne 04 Jul '15

04 Jul '15

Arch Linux Security Advisory ASA-201507-3 ========================================= Severity: High Date : 2015-07-04 CVE-ID : CVE-2015-3281 Package : haproxy Type : information leakage Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package haproxy before version 1.5.14-1 is vulnerable to information leakage. Resolution ========== Upgrade to 1.5.14-1. # pacman -Syu "haproxy>=1.5.14-1" The problem has been fixed upstream in version 1.5.14. Workaround ========== None. Description =========== A vulnerability was found in the handling of HTTP pipelining. In some cases, a client might be able to cause a buffer alignment issue and retrieve uninitialized memory contents that exhibit data from a past request or session. With the proper timing and by requesting files of specific sizes from the backend servers in HTTP pipelining mode, one can trigger a call to a buffer alignment function which was not designed to work with pending output data. The effect is that the output data pointer points to the wrong location in the buffer, causing corruption on the client. It's more visible with chunked encoding and compressed bodies because the client cannot parse the response, but with a regular content-length body, the client will simply retrieve corrupted contents. That's not the worst problem in fact since pipelining is disabled in most clients. The real problem is that it allows the client to sometimes retrieve data from a previous session that remains in the buffer at the location where the output pointer lies. Thus it's an information leak vulnerability. Impact ====== A remote unauthenticated attacker can retrieve sensitive informations from a previous session by sending crafted HTTP requests. References ========== http://marc.info/?l=haproxy&m=143593901506748&w=2 http://git.haproxy.org/?p=haproxy-1.5.git;a=commitdiff;h=7ec765568883b2d4e5… http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3281

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[arch-security] [ASA-201507-2] firefox: multiple issues
by Remi Gacogne 03 Jul '15

03 Jul '15

Arch Linux Security Advisory ASA-201507-2 ========================================= Severity: Critical Date : 2015-07-03 CVE-ID : CVE-2015-2722 CVE-2015-2724 CVE-2015-2725 CVE-2015-2726 CVE-2015-2727 CVE-2015-2728 CVE-2015-2729 CVE-2015-2731 CVE-2015-2733 CVE-2015-2734 CVE-2015-2735 CVE-2015-2736 CVE-2015-2737 CVE-2015-2739 CVE-2015-2740 CVE-2015-2741 CVE-2015-2743 Package : firefox Type : multiple issues Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package firefox before version 39.0-1 is vulnerable to multiple issues, including remote code execution. Resolution ========== Upgrade to 39.0-1. # pacman -Syu "firefox>=39.0-1" The problem has been fixed upstream in version 39.0. Workaround ========== None. Description =========== - CVE-2015-2722, CVE-2015-2733 (Use-after-free in workers while using XMLHttpRequest): Security researcher Looben Yan used the Address Sanitizer tool to discover two related use-after-free vulnerabilities that occur when using XMLHttpRequest in concert with either shared or dedicated workers. These errors occur when the XMLHttpRequest object is attached to a worker but that object is incorrectly deleted while still in use. This results in exploitable crashes. - CVE-2015-2724, CVE-2015-2725, CVE-2015-2726 (Miscellaneous memory safety hazards): Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to run arbitrary code. - CVE-2015-2727 (Local files or privileged URLs in pages can be opened into new tabs): Security researcher Jann Horn reported that when Mozilla Foundation Security Advisory 2015-25 was fixed in Firefox 37, an error was made that caused the fix to not be applied to Firefox 38, effectively causing the bug to be unfixed in Firefox 38 (and Firefox ESR38) once it shipped. As Armin Razmdjou reported for that issue, opening hyperlinks on a page with the mouse and specific keyboard key combinations could allow a Chrome privileged URL to be opened without context restrictions being preserved. This could allow for local files or resources from a known location to be opened with local privileges, bypassing security protections. - CVE-2015-2728 (Type confusion in Indexed Database Manager): Security researcher Paul Bandha reported a type confusion error where part of IDBDatabase is read by the Indexed Database Manager and incorrectly used as a pointer when it shouldn't be used as such. This leads to memory corruption and the possibility of an exploitable crash. - CVE-2015-2729 (Out-of-bound read while computing an oscillator rendering range in Web Audio): Security researcher Holger Fuhrmannek used the Address Sanitizer tool to discover an out-of-bound read while computing an oscillator rendering range in Web Audio. This could allow an attacker to infer the contents of four bytes of memory. - CVE-2015-2731 (Use-after-free in Content Policy due to microtask execution error): Security researcher Herre reported a use-after-free vulnerability when a Content Policy modifies the Document Object Model to remove a DOM object, which is then used afterwards due to an error in microtask implementation. This leads to an exploitable crash. - CVE-2015-2734, CVE-2015-2735, CVE-2015-2736, CVE-2015-2737, CVE-2015-2738, CVE-2015-2739, CVE-2015-2740 (Vulnerabilities found through code inspection): Security researcher Ronald Crane reported seven vulnerabilities affecting released code that he found through code inspection. These included three uses of uninitialized memory, one poor validation leading to an exploitable crash, one read of unowned memory in zip files, and two buffer overflows. These do not all have clear mechanisms to be exploited through web content but are vulnerable if a mechanism can be found to trigger them. - CVE-2015-2741 (Key pinning is ignored when overridable errors are encountered): Mozilla security engineer David Keeler reported that when an overridable error is encountered, such as those for expired certificates or a host name does not match a certificate, pinning checks can be be skipped. This would allow for a user to override a pinned certificate when they should not be able to do so. This issue does not allow for third parties to cause a certificate to be overridden and the user would still have to manually do so. - CVE-2015-2743 (Privilege escalation in PDF.js): Mozilla community member Jonas Jenwald reported broken behavior in Mozilla's PDF.js PDF file viewer which led to the discovery that internal Workers were incorrectly executed with high privilege. If this flaw were combined with a separate vulnerability allowing for same-origin policy violation, it could be used to run arbitrary code. Impact ====== A remote attacker can execute arbitrary code on the affected host. References ========== https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox/#firef… https://www.mozilla.org/en-US/security/advisories/mfsa2015-59/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-60/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-61/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-62/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-63/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-65/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-66/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-67/ https://www.mozilla.org/en-US/security/advisories/mfsa2015-69/ https://access.redhat.com/security/cve/CVE-2015-2722 https://access.redhat.com/security/cve/CVE-2015-2724 https://access.redhat.com/security/cve/CVE-2015-2725 https://access.redhat.com/security/cve/CVE-2015-2726 https://access.redhat.com/security/cve/CVE-2015-2727 https://access.redhat.com/security/cve/CVE-2015-2728 https://access.redhat.com/security/cve/CVE-2015-2729 https://access.redhat.com/security/cve/CVE-2015-2731 https://access.redhat.com/security/cve/CVE-2015-2733 https://access.redhat.com/security/cve/CVE-2015-2734 https://access.redhat.com/security/cve/CVE-2015-2735 https://access.redhat.com/security/cve/CVE-2015-2736 https://access.redhat.com/security/cve/CVE-2015-2737 https://access.redhat.com/security/cve/CVE-2015-2738 https://access.redhat.com/security/cve/CVE-2015-2739 https://access.redhat.com/security/cve/CVE-2015-2740 https://access.redhat.com/security/cve/CVE-2015-2741 https://access.redhat.com/security/cve/CVE-2015-2743

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[arch-security] [ASA-201507-1] wesnoth: information leakage
by Remi Gacogne 03 Jul '15

03 Jul '15

Arch Linux Security Advisory ASA-201507-1 ========================================= Severity: Low Date : 2015-07-03 CVE-ID : CVE-2015-5069 CVE-2015-5070 Package : wesnoth Type : information leakage Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package wesnoth before version 1.12.4-1 is vulnerable to information leakage. Resolution ========== Upgrade to 1.12.4-1. # pacman -Syu "wesnoth>=1.12.4-1" The problem has been fixed upstream in version 1.12.4 (an incomplete fix existed in version 1.12.3). Workaround ========== None. Description =========== Wesnoth implements a text preprocessing language that is used in conjunction with its own game scripting language. It also has a built-in Lua interpreter and API. Both the Lua API and the preprocessor make use of the same function (filesystem::get_wml_location()) to resolve file paths so that only content from the user's data directory can be read. However, the function did not explicitly disallow files with the .pbl extension. The contents of these files could thus be stored in saved game files or even transmitted directly to other users in a networked game. Among the information that's compromised is a user-defined passphrase used to authenticate uploads to the game's content server. CVE-2015-5069 and CVE-2015-5070 have been assigned to this vulnerability. Version 1.12.3 included a fix for CVE-2015-5069 only, remaining vulnerable to CVE-2015-5070. Versions 1.12.4 and 1.13.1 contain a more complete fix that addresses both. Impact ====== A remote attacker might be able to get access to sensitive information, including but not limited to a user-defined passphrase used to authenticate uploads to the game's content server. References ========== https://access.redhat.com/security/cve/CVE-2015-5069 https://access.redhat.com/security/cve/CVE-2015-5070 http://forums.wesnoth.org/viewtopic.php?t=42775 http://seclists.org/oss-sec/2015/q2/793

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[arch-security] Are you getting this?
by Allan McRae 29 Jun '15

29 Jun '15

I may have set it up correctly...

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