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Gentoo Linux Security Advisory GLSA 200505-05 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: gzip: Multiple vulnerabilities |
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Date: May 09, 2005 |
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Bugs: #89946, #90626 |
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ID: 200505-05 |
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Synopsis |
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======== |
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|
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gzip contains multiple vulnerabilities potentially allowing an attacker |
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to execute arbitrary commands. |
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Background |
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========== |
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|
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gzip (GNU zip) is a popular compression program. The included zgrep |
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utility allows you to grep gzipped files in place. |
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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 app-arch/gzip < 1.3.5-r6 >= 1.3.5-r6 |
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|
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Description |
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=========== |
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|
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The gzip and gunzip programs are vulnerable to a race condition when |
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setting file permissions (CAN-2005-0988), as well as improper handling |
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of filename restoration (CAN-2005-1228). The zgrep utility improperly |
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sanitizes arguments, which may come from an untrusted source |
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(CAN-2005-0758). |
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|
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Impact |
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====== |
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|
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These vulnerabilities could allow arbitrary command execution, changing |
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the permissions of arbitrary files, and installation of files to an |
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aribitrary location in the filesystem. |
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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 gzip users should upgrade to the latest stable version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-arch/gzip-1.3.5-r6" |
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|
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References |
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========== |
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[ 1 ] CAN-2005-0758 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0758 |
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[ 2 ] CAN-2005-0988 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0988 |
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[ 3 ] CAN-2005-1228 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1228 |
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|
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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-200505-05.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 2005 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/2.0 |
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