thunderbird: multiple issues

2015-07-11T00:00:00
ID ASA-201507-9
Type archlinux
Reporter Arch Linux
Modified 2015-07-11T00:00:00

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.