VULNERABILITY INTELLIGENCE

CVE-2020-7453

CVSS score6 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2020-04-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Description

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.

Weakness classification

  • CWE-754: Improper Check for Unusual or Exceptional Conditions

Primary references