GLSA-200507-11 : MIT Kerberos 5: Multiple vulnerabilities

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200507-11
(MIT Kerberos 5: Multiple vulnerabilities)

Daniel Wachdorf discovered that MIT Kerberos 5 could corrupt the
heap by freeing unallocated memory when receiving a special TCP request
(CAN-2005-1174). He also discovered that the same request could lead to
a single-byte heap overflow (CAN-2005-1175). Magnus Hagander discovered
that krb5_recvauth() function of MIT Kerberos 5 might try to
double-free memory (CAN-2005-1689).

Impact :

Although exploitation is considered difficult, a remote attacker
could exploit the single-byte heap overflow and the double-free
vulnerability to execute arbitrary code, which could lead to the
compromise of the whole Kerberos realm. A remote attacker could also
use the heap corruption to cause a Denial of Service.

Workaround :

There are no known workarounds at this time.

See also :

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-002-kdc.txt
http://www.nessus.org/u?20d6a900
http://www.gentoo.org/security/en/glsa/glsa-200507-11.xml

Solution :

All MIT Kerberos 5 users should upgrade to the latest available
version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-crypt/mit-krb5-1.4.1-r1'

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 18686 (gentoo_GLSA-200507-11.nasl)

Bugtraq ID:

CVE ID: CVE-2005-1174
CVE-2005-1175
CVE-2005-1689