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/#firefo... 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