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Gentoo Linux Security Advisory GLSA 200908-07 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Perl Compress::Raw modules: Denial of Service |
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Date: August 18, 2009 |
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Bugs: #273141, #281955 |
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ID: 200908-07 |
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Synopsis |
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======== |
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|
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An off-by-one error in Compress::Raw::Zlib and Compress::Raw::Bzip2 |
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might lead to a Denial of Service. |
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|
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Background |
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========== |
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|
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Compress::Raw::Zlib and Compress::Raw::Bzip2 are Perl low-level |
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interfaces to the zlib and bzip2 compression libraries. |
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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 perl-core/Compress-Raw-Zlib < 2.020 >= 2.020 |
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2 perl-core/Compress-Raw-Bzip2 < 2.020 >= 2.020 |
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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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Leo Bergolth reported an off-by-one error in the inflate() function in |
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Zlib.xs of Compress::Raw::Zlib, possibly leading to a heap-based buffer |
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overflow (CVE-2009-1391). |
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|
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Paul Marquess discovered a similar vulnerability in the bzinflate() |
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function in Bzip2.xs of Compress::Raw::Bzip2 (CVE-2009-1884). |
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|
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Impact |
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====== |
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|
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A remote attacker might entice a user or automated system (for instance |
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running SpamAssassin or AMaViS) to process specially crafted files, |
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possibly resulting in a Denial of Service condition. |
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|
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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 Compress::Raw::Zlib users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose |
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=perl-core/Compress-Raw-Zlib-2.020 |
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|
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All Compress::Raw::Bzip2 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 |
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=perl-core/Compress-Raw-Bzip2-2.020 |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2009-1391 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1391 |
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[ 2 ] CVE-2009-1884 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1884 |
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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-200908-07.xml |
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|
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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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https://bugs.gentoo.org. |
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|
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License |
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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 |
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