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CentOS 5 : gnutls (CESA-2012:0428)
medium Nessus Plugin ID 58504
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Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated gnutls packages that fix three security issues are now available for Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). GnuTLS includes libtasn1, a library developed for ASN.1 (Abstract Syntax Notation One) structures management that includes DER (Distinguished Encoding Rules) encoding and decoding.
A flaw was found in the way GnuTLS decrypted malformed TLS records.
This could cause a TLS/SSL client or server to crash when processing a specially crafted TLS record from a remote TLS/SSL connection peer.
(CVE-2012-1573)
A flaw was found in the way libtasn1 decoded DER data. An attacker could create a carefully-crafted X.509 certificate that, when parsed by an application that uses GnuTLS, could cause the application to crash. (CVE-2012-1569)
A boundary error was found in the gnutls_session_get_data() function.
A malicious TLS/SSL server could use this flaw to crash a TLS/SSL client or, possibly, execute arbitrary code as the client, if the client passed a fixed-sized buffer to gnutls_session_get_data() before checking the real size of the session data provided by the server.
(CVE-2011-4128)
Red Hat would like to thank Matthew Hall of Mu Dynamics for reporting CVE-2012-1573 and CVE-2012-1569.
Users of GnuTLS are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all applications linked to the GnuTLS library must be restarted, or the system rebooted.
Solution
Update the affected gnutls packages.See Also
Plugin Details
Severity: Medium
ID: 58504
File Name: centos_RHSA-2012-0428.nasl
Version: 1.13
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 3/28/2012
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2012-1569
Vulnerability Information
CPE: p-cpe:/a:centos:centos:gnutls-utils, p-cpe:/a:centos:centos:gnutls, p-cpe:/a:centos:centos:gnutls-devel, cpe:/o:centos:centos:5
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/27/2012
Vulnerability Publication Date: 12/8/2011
Reference Information
CVE: CVE-2011-4128, CVE-2012-1569, CVE-2012-1573
RHSA: 2012:0428