vulnerability

MFSA2020-24 Firefox: Security Vulnerabilities fixed in Firefox 78 (CVE-2020-12420)

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Severity

CVSS

(AV:N/AC:M/Au:N/C:C/I:C/A:C)

Published

Jun 30, 2020

Added

Jul 2, 2020

Modified

Mar 27, 2026

Description

When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Solution

mozilla-firefox-upgrade-78_0

References

CVE-2020-12420
https://attackerkb.com/topics/CVE-2020-12420
CWE-362
CWE-416
EUVD-EUVD-2020-4732
http://www.mozilla.org/security/announce/2020/mfsa2020-24.html
https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-4732

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