GLSA-200403-03 : Multiple OpenSSL Vulnerabilities

This script is Copyright (C) 2004-2014 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-200403-03
(Multiple OpenSSL Vulnerabilities)

Testing performed by the OpenSSL group using the Codenomicon TLS Test
Tool uncovered a null-pointer assignment in the do_change_cipher_spec()
function. A remote attacker could perform a carefully crafted SSL/TLS
handshake against a server that used the OpenSSL library in such a way
as to cause OpenSSL to crash. Depending on the application this could
lead to a denial of service. All versions of OpenSSL from 0.9.6c to
0.9.6l inclusive and from 0.9.7a to 0.9.7c inclusive are affected by
this issue.
A flaw has been discovered in SSL/TLS handshaking code when using
Kerberos ciphersuites. A remote attacker could perform a carefully
crafted SSL/TLS handshake against a server configured to use Kerberos
ciphersuites in such a way as to cause OpenSSL to crash. Most
applications have no ability to use Kerberos cipher suites and will
therefore be unaffected. Versions 0.9.7a, 0.9.7b, and 0.9.7c of OpenSSL
are affected by this issue.
Testing performed by the OpenSSL group using the Codenomicon TLS Test
Tool uncovered a bug in older versions of OpenSSL 0.9.6 that can lead
to a Denial of Service attack (infinite loop). This issue was traced to
a fix that was added to OpenSSL 0.9.6d some time ago. This issue will
affect vendors that ship older versions of OpenSSL with backported
security patches.

Impact :

Although there are no public exploits known for bug, users are
recommended to upgrade to ensure the security of their infrastructure.

Workaround :

There is no immediate workaround
a software upgrade is required. The
vulnerable function in the code has been rewritten.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200403-03.xml

Solution :

All users are recommened to upgrade openssl to either 0.9.7d or 0.9.6m:
# emerge sync
# emerge -pv '>=dev-libs/openssl-0.9.7d'
# emerge '>=dev-libs/openssl-0.9.7d'

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 14454 (gentoo_GLSA-200403-03.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0079
CVE-2004-0081
CVE-2004-0112