CVE-2020-6831

CRITICAL

Firefox < 76.0 and Firefox ESR < 68.8.0 - Out-of-bounds Write via SCTP Chunk Parsing

Title source: llm
STIX 2.1

Description

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

References (10)

Core 10
Core References
Permissions Required x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1632241
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4373-1/
Patch, Third Party Advisory x_refsource_misc
https://security.gentoo.org/glsa/202005-03
Third Party Advisory x_refsource_misc
https://security.gentoo.org/glsa/202005-04
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4714
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html

Scores

CVSS v3 9.8
EPSS 0.0627
EPSS Percentile 91.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (10)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.10
canonical/ubuntu_linux 20.04
debian/debian_linux 9.0
debian/debian_linux 10.0
mozilla/firefox < 76.0
mozilla/firefox_esr < 68.8.0
mozilla/thunderbird < 68.8.0
opensuse/leap 15.2
Published May 26, 2020
Tracked Since Feb 18, 2026