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.
https://www.mozilla.org/security/advisories/mfsa2020-17/
https://www.mozilla.org/security/advisories/mfsa2020-18/
https://www.mozilla.org/security/advisories/mfsa2020-16/
https://bugzilla.mozilla.org/show_bug.cgi?id=1632241
https://usn.ubuntu.com/4373-1/
https://security.gentoo.org/glsa/202005-03
https://security.gentoo.org/glsa/202005-04
https://www.debian.org/security/2020/dsa-4714
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html
http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html
Source: MITRE
Published: 2020-05-26
Updated: 2021-07-21
Type: CWE-120
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL