vulnerability
Arch Linux: Access restriction bypass (CVE-2021-29946)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jun 24, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jun 24, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue has been found in Firefox before version 88 and Thunderbird before version 78.10. Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-29946
- https://attackerkb.com/topics/CVE-2021-29946
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1698503
- URL-https://security.archlinux.org/ASA-202104-3
- URL-https://security.archlinux.org/ASA-202104-4
- URL-https://www.mozilla.org/security/advisories/mfsa2021-14/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-15/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-16/
- CWE-190
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