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FreeBSD: VID-DEB6E164-B30B-11E9-A87F-A4BADB2F4699 (CVE-2019-5603): FreeBSD -- Reference count overflow in mqueue filesystem

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FreeBSD: VID-DEB6E164-B30B-11E9-A87F-A4BADB2F4699 (CVE-2019-5603): FreeBSD -- Reference count overflow in mqueue filesystem

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
07/24/2019
Created
07/31/2019
Added
07/31/2019
Modified
08/16/2019

Description

In FreeBSD 12.0-STABLE before r350261, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350263, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, system calls operating on file descriptors as part of mqueuefs did not properly release the reference allowing a malicious user to overflow the counter allowing access to files, directories, and sockets opened by processes owned by other users.

Solution(s)

  • freebsd-upgrade-base-11_2-release-p12
  • freebsd-upgrade-base-11_3-release-p1
  • freebsd-upgrade-base-12_0-release-p8

References

  • CVE-2019-5603

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