CVE-2021-4129
Description
Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. 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 < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:5013
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:5045
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-4129
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | sid | fixed | 95.0-1 |
| debian | bookworm | fixed | 91.4.0esr-1 |
| debian | bullseye | fixed | 91.4.1esr-1~deb11u1 |
| debian | forky | fixed | 91.4.0esr-1 |
| debian | trixie | fixed | 91.4.0esr-1 |
| rocky | 8 | fixed | |
References
Verify integrity in audit chain (admin only). AS-IS.