CVE-2020-12420

HIGH

Firefox ESR < 68.10, Firefox < 78, Thunderbird < 68.10.0 - Use Afte...

Title source: llm
STIX 2.1

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.

References (11)

Core 11
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1643437
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4421-1/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202007-09
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202007-10

Scores

CVSS v3 8.8
EPSS 0.0044
EPSS Percentile 63.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-362 CWE-416
Status published
Products (9)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
canonical/ubuntu_linux 20.04
mozilla/firefox < 78.0
mozilla/firefox_esr < 68.10.0
mozilla/thunderbird < 68.10.0
opensuse/leap 15.1
opensuse/leap 15.2
Published Jul 09, 2020
Tracked Since Feb 18, 2026