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Gentoo Linux Security Advisory GLSA 200804-06 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: UnZip: User-assisted execution of arbitrary code |
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Date: April 06, 2008 |
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Bugs: #213761 |
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ID: 200804-06 |
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Synopsis |
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======== |
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|
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A double free vulnerability discovered in UnZip might lead to the |
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execution of arbitrary code. |
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Background |
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========== |
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Info-ZIP's UnZip is a tool to list and extract files inside PKZIP |
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compressed files. |
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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-arch/unzip < 5.52-r2 >= 5.52-r2 |
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Description |
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=========== |
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|
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Tavis Ormandy of the Google Security Team discovered that the NEEDBITS |
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macro in the inflate_dynamic() function in the file inflate.c can be |
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invoked using invalid buffers, which can lead to a double free. |
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|
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Impact |
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====== |
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|
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Remote attackers could entice a user or automated system to open a |
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specially crafted ZIP file that might lead to the execution of |
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arbitrary code or a Denial of Service. |
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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 UnZip users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-arch/unzip-5.52-r2" |
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|
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References |
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========== |
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[ 1 ] CVE-2008-0888 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0888 |
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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-200804-06.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 2008 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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