Gentoo: 201206-18 Normal: GnuTLS Remote Attacks and DoS Threat
gentoo
June 23, 2012
Multiple vulnerabilities have been found in GnuTLS, allowing a remote attacker to perform man-in-the-middle or Denial of Service attacks.
Summary
Multiple vulnerabilities have been found in GnuTLS:
* An error in libgnutls does not properly sanitize "\0" characters from
certificate fields (CVE-2009-2730).
* An error in the TLS and SSL protocols mistreats renegotiation
handshakes (CVE-2009-3555).
* A boundary error in the "gnutls_session_get_data()" function in
gnutls_session.c could cause a buffer overflow (CVE-2011-4128).
* An error in the "_gnutls_ciphertext2compressed()" function in
gnutls_cipher.c could cause memory corruption (CVE-2012-1573).
Topics Covered
Resolution
All GnuTLS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.12.18"
References
[ 1 ] CVE-2009-2730 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-2730 [ 2 ] CVE-2009-3555 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3555 [ 3 ] CVE-2011-4128 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4128 [ 4 ] CVE-2012-1573 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1573
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201206-18
style>.gentoo_availability{display:block;}
Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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Severity: Normal
Title: GnuTLS: Multiple vulnerabilities
Date: June 23, 2012
Bugs: #281224, #292025, #389947, #409287
ID: 201206-18
Topics Covered
Background
GnuTLS is an Open Source implementation of the TLS 1.2 and SSL 3.0
protocols.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/gnutls < 2.12.18 >= 2.12.18
Impact
=====
A remote attacker could perform man-in-the-middle attacks to spoof
arbitrary SSL servers or cause a Denial of Service condition in
applications linked against GnuTLS.
Workaround
There is no known workaround at this time.
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