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Mandriva Linux Security Advisory 2013-019

Mandriva Linux Security Advisory 2013-019
Posted Mar 8, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-019 - A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handled session renegotiation. A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website. This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update addresses this flaw by implementing the TLS Renegotiation Indication Extension, as defined in RFC 5746. The TLS implementation in GnuTLS before 2.12.23, 3.0.x before 3.0.28, and 3.1.x before 3.1.7 does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169. The updated packages have been patched to correct these issues.

tags | advisory, remote, web, arbitrary, protocol
systems | linux, mandriva
advisories | CVE-2009-3555, CVE-2013-1619
MD5 | 0cdc21db97aa886e8dd8d35a7e71f65c

Mandriva Linux Security Advisory 2013-019

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2013:019
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : gnutls
Date : March 7, 2013
Affected: Enterprise Server 5.0
_______________________________________________________________________

Problem Description:

Multiple vulnerabilities has been found and corrected in gnutls:

A flaw was found in the way the TLS/SSL (Transport Layer
Security/Secure Sockets Layer) protocols handled session
renegotiation. A man-in-the-middle attacker could use this flaw
to prefix arbitrary plain text to a client's session (for example,
an HTTPS connection to a website). This could force the server to
process an attacker's request as if authenticated using the victim's
credentials. This update addresses this flaw by implementing the
TLS Renegotiation Indication Extension, as defined in RFC 5746
(CVE-2009-3555).

The TLS implementation in GnuTLS before 2.12.23, 3.0.x before 3.0.28,
and 3.1.x before 3.1.7 does not properly consider timing side-channel
attacks on a noncompliant MAC check operation during the processing
of malformed CBC padding, which allows remote attackers to conduct
distinguishing attacks and plaintext-recovery attacks via statistical
analysis of timing data for crafted packets, a related issue to
CVE-2013-0169 (CVE-2013-1619).

The updated packages have been patched to correct these issues.
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1619
_______________________________________________________________________

Updated Packages:

Mandriva Enterprise Server 5:
48dfde02cfa9c869bb97ec71252b8af7 mes5/i586/gnutls-2.4.1-2.8mdvmes5.2.i586.rpm
9f534885a90c121ddb4f911d85462a42 mes5/i586/libgnutls26-2.4.1-2.8mdvmes5.2.i586.rpm
746200c5109707c76a71060672bedfa7 mes5/i586/libgnutls-devel-2.4.1-2.8mdvmes5.2.i586.rpm
8c9bbb918f94a539d82ef057dc201bd2 mes5/SRPMS/gnutls-2.4.1-2.8mdvmes5.2.src.rpm

Mandriva Enterprise Server 5/X86_64:
dce865b93f4a52aeae1686aed09136f3 mes5/x86_64/gnutls-2.4.1-2.8mdvmes5.2.x86_64.rpm
345540258af6fde7320c7b518c179509 mes5/x86_64/lib64gnutls26-2.4.1-2.8mdvmes5.2.x86_64.rpm
b7c9a97fd0f01c52728fbdbc96b3ba55 mes5/x86_64/lib64gnutls-devel-2.4.1-2.8mdvmes5.2.x86_64.rpm
8c9bbb918f94a539d82ef057dc201bd2 mes5/SRPMS/gnutls-2.4.1-2.8mdvmes5.2.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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