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Gentoo Linux Security Advisory GLSA 200612-03 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: GnuPG: Multiple vulnerabilities |
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Date: December 10, 2006 |
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Bugs: #156476, #156947 |
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ID: 200612-03 |
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Synopsis |
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======== |
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|
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GnuPG is vulnerable to a buffer overflow and an erroneous function |
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pointer dereference that can result in the execution of arbitrary code. |
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Background |
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========== |
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|
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The GNU Privacy Guard, GnuPG, is a free replacement for the PGP suite |
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of cryptographic software. |
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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 app-crypt/gnupg < 1.4.6 >= 1.4.6 |
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Description |
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=========== |
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|
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Hugh Warrington has reported a boundary error in GnuPG, in the |
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"ask_outfile_name()" function from openfile.c: the |
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make_printable_string() function could return a string longer than |
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expected. Additionally, Tavis Ormandy of the Gentoo Security Team |
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reported a design error in which a function pointer can be incorrectly |
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dereferenced. |
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Impact |
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====== |
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|
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A remote attacker could entice a user to interactively use GnuPG on a |
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crafted file and trigger the boundary error, which will result in a |
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buffer overflow. They could also entice a user to process a signed or |
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encrypted file with gpg or gpgv, possibly called through another |
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application like a mail client, to trigger the dereference error. Both |
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of these vulnerabilities would result in the execution of arbitrary |
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code with the permissions of the user running GnuPG. gpg-agent, gpgsm |
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and other tools are not affected. |
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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 GnuPG users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.6" |
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References |
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========== |
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[ 1 ] CVE-2006-6169 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6169 |
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[ 2 ] CVE-2006-6235 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6235 |
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Availability |
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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-200612-03.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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License |
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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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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.5 |
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