GLSA-200905-04 : GnuTLS: Multiple vulnerabilities

This script is Copyright (C) 2009-2014 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-200905-04
(GnuTLS: Multiple vulnerabilities)

The following vulnerabilities were found in GnuTLS:
Miroslav Kratochvil reported that lib/pk-libgcrypt.c does not
properly handle corrupt DSA signatures, possibly leading to a
double-free vulnerability (CVE-2009-1415).
Simon Josefsson
reported that GnuTLS generates RSA keys stored in DSA structures when
creating a DSA key (CVE-2009-1416).
Romain Francoise reported
that the _gnutls_x509_verify_certificate() function in
lib/x509/verify.c does not perform time checks, resulting in the
'gnutls-cli' program accepting X.509 certificates with validity times
in the past or future (CVE-2009-1417).

Impact :

A remote attacker could entice a user or automated system to process a
specially crafted DSA certificate, possibly resulting in a Denial of
Service condition. NOTE: This issue might have other unspecified impact
including the execution of arbitrary code. Furthermore, a remote
attacker could spoof signatures on certificates and the 'gnutls-cli'
application can be tricked into accepting an invalid certificate.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200905-04.xml

Solution :

All GnuTLS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-libs/gnutls-2.6.6'

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: 38885 (gentoo_GLSA-200905-04.nasl)

Bugtraq ID:

CVE ID: CVE-2009-1415
CVE-2009-1416
CVE-2009-1417