CVEvulnerability
CVE-2020-12420
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-07-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-362, CWE-416
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.
Affected configurations
• mozilla firefox (< 78.0)
• mozilla firefox esr (< 68.10.0)
• mozilla thunderbird (< 68.10.0)
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 19.10
• canonical ubuntu linux 20.04
• opensuse leap 15.1
• opensuse leap 15.2
Related
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Mailing List, Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1643437 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202007-09 Third Party Advisory
- https://security.gentoo.org/glsa/202007-10 Third Party Advisory
- https://usn.ubuntu.com/4421-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-25/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-26/ Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html Mailing List, Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1643437 Exploit, Issue Tracking, Vendor Advisory
- https://security.gentoo.org/glsa/202007-09 Third Party Advisory
- https://security.gentoo.org/glsa/202007-10 Third Party Advisory
- https://usn.ubuntu.com/4421-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-25/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-26/ Vendor Advisory