UBUNTU-CVE-2021-29946

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UBUNTU-CVE-2021-29946

Summary:

Details: 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. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

References: https://ubuntu.com/security/CVE-2021-29946, https://www.mozilla.org/en-US/security/advisories/mfsa2021-14/#CVE-2021-29946, https://www.mozilla.org/en-US/security/advisories/mfsa2021-15/#CVE-2021-29946, https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/#CVE-2021-29946, https://access.redhat.com/security/cve/CVE-2021-29946, https://ubuntu.com/security/notices/USN-4926-1, https://ubuntu.com/security/notices/USN-4995-1, https://ubuntu.com/security/notices/USN-4995-2, https://www.cve.org/CVERecord?id=CVE-2021-29946