Medium severity · published Mar 26, 2021
CVE-2020-7463
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…
5.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.5 · source: NVD
MA
macOS · Apple
11.0 before 11.3 · source: NVD
FR
Freebsd · Freebsd
11.3; 11.3; 11.3; 11.3; 11.3; 11.3; +20 more · source: NVD
IC
Icloud · Apple
before 12.3 · source: NVD
IT
Itunes · Apple
before 12.11.3 · source: NVD
SA
Safari · Apple
before 14.1 · source: NVD
TV
Tvos · Apple
before 14.5 · source: NVD
WA
Watchos · Apple
before 7.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7463
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-7463
Mailing List
http://seclists.org/fulldisclosure/2021/Apr/49
Mailing List
http://seclists.org/fulldisclosure/2021/Apr/50
Mailing List
http://seclists.org/fulldisclosure/2021/Apr/57
Mailing List
http://seclists.org/fulldisclosure/2021/Apr/58
Mailing List
http://seclists.org/fulldisclosure/2021/Apr/59
Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.asc
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