FreeBSD : krb5 -- unkeyed PAC checksum handling vulnerability (9f971cea-03f5-11e0-bf50-001a926c7637)

This script is Copyright (C) 2010-2016 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

The MIT Kerberos team reports :

MIT krb5 incorrectly accepts an unkeyed checksum for PAC signatures.

An authenticated remote attacker can forge PACs if using a KDC that
does not filter client-provided PAC data. This can result in privilege
escalation against a service that relies on PAC contents to make
authorization decisions.

See also :

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt
http://www.nessus.org/u?5a5c4175

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS Temporal Score : 3.2
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 51104 ()

Bugtraq ID: 45116

CVE ID: CVE-2010-1324

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