GLSA-200805-20 : GnuTLS: Execution of arbitrary code

Critical Nessus Plugin ID 32418

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-200805-20 (GnuTLS: Execution of arbitrary code)

Ossi Herrala and Jukka Taimisto of Codenomicon reported three vulnerabilities in libgnutls of GnuTLS:
'Client Hello' messages containing an invalid server name can lead to a buffer overflow when evaluating 'Security Parameters' (CVE-2008-1948).
Multiple 'Client Hello' messages can lead to a NULL pointer dereference (CVE-2008-1949).
A TLS handshake including an encrypted 'Client Hello' message and an invalid record length could lead to a buffer overread (CVE-2008-1950).
Impact :

Unauthenticated remote attackers could exploit these vulnerabilities to cause Denial of Service conditions in daemons using GnuTLS. The first vulnerability (CVE-2008-1948) might allow for the execution of arbitrary code with the privileges of the daemon handling incoming TLS connections.
Workaround :

There is no known workaround at this time.

Solution

All GnuTLS users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-libs/gnutls-2.2.5'

See Also

https://security.gentoo.org/glsa/200805-20

Plugin Details

Severity: Critical

ID: 32418

File Name: gentoo_GLSA-200805-20.nasl

Version: 1.14

Type: local

Published: 2008/05/22

Updated: 2019/08/02

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:gnutls, cpe:/o:gentoo:linux

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

Patch Publication Date: 2008/05/21

Reference Information

CVE: CVE-2008-1948, CVE-2008-1949, CVE-2008-1950

GLSA: 200805-20

CWE: 189, 287