GLSA-200904-09 : MIT Kerberos 5: Multiple vulnerabilities

Critical Nessus Plugin ID 36137

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-200904-09 (MIT Kerberos 5: Multiple vulnerabilities)

Multiple vulnerabilities have been reported in MIT Kerberos 5:
A free() call on an uninitialized pointer in the ASN.1 decoder when decoding an invalid encoding (CVE-2009-0846).
A buffer overread in the SPNEGO GSS-API application, reported by Apple Product Security (CVE-2009-0844).
A NULL pointer dereference in the SPNEGO GSS-API application, reported by Richard Evans (CVE-2009-0845).
An incorrect length check inside an ASN.1 decoder leading to spurious malloc() failures (CVE-2009-0847).
Impact :

A remote unauthenticated attacker could exploit the first vulnerability to cause a Denial of Service or, in unlikely circumstances, execute arbitrary code on the host running krb5kdc or kadmind with root privileges and compromise the Kerberos key database. Exploitation of the other vulnerabilities might lead to a Denial of Service in kadmind, krb5kdc, or other daemons performing authorization against Kerberos that utilize GSS-API or an information disclosure.
Workaround :

There is no known workaround at this time.

Solution

All MIT Kerberos 5 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-crypt/mit-krb5-1.6.3-r6'

See Also

https://security.gentoo.org/glsa/200904-09

Plugin Details

Severity: Critical

ID: 36137

File Name: gentoo_GLSA-200904-09.nasl

Version: Revision: 1.12

Type: local

Published: 2009/04/11

Updated: 2016/11/11

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:mit-krb5, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2009/04/08

Reference Information

CVE: CVE-2009-0844, CVE-2009-0845, CVE-2009-0846, CVE-2009-0847

BID: 34257, 34408, 34409

GLSA: 200904-09

CWE: 20, 119, 189