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Gentoo Linux Security Advisory GLSA 201206-18 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: GnuTLS: Multiple vulnerabilities |
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Date: June 23, 2012 |
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Bugs: #281224, #292025, #389947, #409287 |
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ID: 201206-18 |
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Synopsis |
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======== |
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|
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Multiple vulnerabilities have been found in GnuTLS, allowing a remote |
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attacker to perform man-in-the-middle or Denial of Service attacks. |
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|
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Background |
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========== |
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|
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GnuTLS is an Open Source implementation of the TLS 1.2 and SSL 3.0 |
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protocols. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-libs/gnutls < 2.12.18 >= 2.12.18 |
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|
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Description |
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=========== |
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|
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Multiple vulnerabilities have been found in GnuTLS: |
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|
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* An error in libgnutls does not properly sanitize "\0" characters from |
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certificate fields (CVE-2009-2730). |
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* An error in the TLS and SSL protocols mistreats renegotiation |
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handshakes (CVE-2009-3555). |
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* A boundary error in the "gnutls_session_get_data()" function in |
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gnutls_session.c could cause a buffer overflow (CVE-2011-4128). |
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* An error in the "_gnutls_ciphertext2compressed()" function in |
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gnutls_cipher.c could cause memory corruption (CVE-2012-1573). |
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|
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Impact |
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====== |
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|
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A remote attacker could perform man-in-the-middle attacks to spoof |
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arbitrary SSL servers or cause a Denial of Service condition in |
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applications linked against GnuTLS. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All GnuTLS users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.12.18" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2009-2730 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-2730 |
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[ 2 ] CVE-2009-3555 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3555 |
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[ 3 ] CVE-2011-4128 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4128 |
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[ 4 ] CVE-2012-1573 |
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http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1573 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-201206-18.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2012 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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