CVE-2020-7463

medium

Description

In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.asc

https://support.apple.com/kb/HT212325

https://support.apple.com/kb/HT212321

https://support.apple.com/kb/HT212317

https://support.apple.com/kb/HT212318

https://support.apple.com/kb/HT212319

http://seclists.org/fulldisclosure/2021/Apr/50

http://seclists.org/fulldisclosure/2021/Apr/49

http://seclists.org/fulldisclosure/2021/Apr/57

http://seclists.org/fulldisclosure/2021/Apr/58

http://seclists.org/fulldisclosure/2021/Apr/59

https://support.apple.com/kb/HT212324

https://support.apple.com/kb/HT212323

Details

Source: MITRE

Published: 2021-03-26

Updated: 2022-04-22

Type: CWE-416

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM