CVE-2020-7453

In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option "osrelease" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
freebsdCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 20%
VendorProductVersion
freebsdfreebsd
11.3
freebsdfreebsd
11.3:p1
freebsdfreebsd
11.3:p2
freebsdfreebsd
11.3:p3
freebsdfreebsd
11.3:p4
freebsdfreebsd
11.3:p5
freebsdfreebsd
11.3:p6
freebsdfreebsd
12.1
freebsdfreebsd
12.1:p1
freebsdfreebsd
12.1:p2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc