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Gentoo Linux Security Advisory GLSA 200602-08 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: libtasn1, GNU TLS: Security flaw in DER decoding |
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Date: February 16, 2006 |
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Bugs: #122307 |
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ID: 200602-08 |
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Synopsis |
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======== |
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|
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A flaw in the parsing of Distinguished Encoding Rules (DER) has been |
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discovered in libtasn1, potentially resulting in the execution of |
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arbitrary code. |
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|
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Background |
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========== |
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|
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Libtasn1 is a library used to parse ASN.1 (Abstract Syntax Notation |
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One) objects, and perform DER (Distinguished Encoding Rules) decoding. |
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Libtasn1 is included with the GNU TLS library, which is used by |
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applications to provide a cryptographically secure communications |
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channel. |
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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 dev-libs/libtasn1 < 0.2.18 >= 0.2.18 |
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2 net-libs/gnutls < 1.2.10 >= 1.2.10 |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Evgeny Legerov has reported a flaw in the DER decoding routines |
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provided by libtasn1, which could cause an out of bounds access to |
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occur. |
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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 cause an application using libtasn1 to crash |
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and potentially execute arbitrary code by sending specially crafted |
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input. |
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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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All libtasn1 users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-0.2.18" |
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|
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All GNU TLS 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-1.2.10" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2006-0645 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0645 |
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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-200602-08.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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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 2006 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/2.0 |
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