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Gentoo Linux Security Advisory GLSA 200905-04 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: GnuTLS: Multiple vulnerabilities |
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Date: May 24, 2009 |
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Bugs: #267774 |
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ID: 200905-04 |
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|
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Synopsis |
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======== |
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|
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Multiple vulnerabilities in GnuTLS might result in a Denial of Service, |
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spoofing or the generation of invalid keys. |
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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 1.0 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 < 2.6.6 >= 2.6.6 |
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|
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Description |
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=========== |
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|
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The following vulnerabilities were found in GnuTLS: |
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|
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* Miroslav Kratochvil reported that lib/pk-libgcrypt.c does not |
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properly handle corrupt DSA signatures, possibly leading to a |
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double-free vulnerability (CVE-2009-1415). |
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|
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* Simon Josefsson reported that GnuTLS generates RSA keys stored in |
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DSA structures when creating a DSA key (CVE-2009-1416). |
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|
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* Romain Francoise reported that the |
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_gnutls_x509_verify_certificate() function in lib/x509/verify.c does |
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not perform time checks, resulting in the "gnutls-cli" program |
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accepting X.509 certificates with validity times in the past or |
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future (CVE-2009-1417). |
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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 entice a user or automated system to process a |
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specially crafted DSA certificate, possibly resulting in a Denial of |
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Service condition. NOTE: This issue might have other unspecified impact |
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including the execution of arbitrary code. Furthermore, a remote |
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attacker could spoof signatures on certificates and the "gnutls-cli" |
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application can be tricked into accepting an invalid certificate. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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|
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Resolution |
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========== |
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|
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All GnuTLS users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.6.6" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2009-1415 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1415 |
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[ 2 ] CVE-2009-1416 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1416 |
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[ 3 ] CVE-2009-1417 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1417 |
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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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|
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http://security.gentoo.org/glsa/glsa-200905-04.xml |
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|
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Concerns? |
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========= |
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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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http://bugs.gentoo.org. |
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|
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License |
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======= |
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|
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Copyright 2009 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 |