Headline
CVE-2021-38495: Security Vulnerabilities fixed in Thunderbird 91.1
Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 91.1 and Firefox ESR < 91.1.
Mozilla Foundation Security Advisory 2021-41
Announced
September 7, 2021
Impact
low
Products
Thunderbird
Fixed in
- Thunderbird 91.1
#CVE-2021-38492: Navigating to `mk:` URL scheme could load Internet Explorer
Reporter
James Lee
Impact
moderate
Description
When delegating navigations to the operating system, Thunderbird would accept the mk scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode.
This bug only affects Thunderbird for Windows. Other operating systems are unaffected.
References
- Bug 1721107
#CVE-2021-38495: Memory safety bugs fixed in Thunderbird 91.1
Reporter
Mozilla developers and community
Impact
high
Description
Mozilla developers Tyson Smith, Christian Holler, and Gabriele Svelto reported memory safety bugs present in Thunderbird 78.13.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
References
- Memory safety bugs fixed in Thunderbird 91.1
Related news
Gentoo Linux Security Advisory 202208-14 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 91.12.0 are affected.
Gentoo Linux Security Advisory 202208-14 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 91.12.0 are affected.
Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.