drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Falsche Archivlänge in archive::zip
Name: |
Falsche Archivlänge in archive::zip
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ID: |
200410-31 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
So, 31. Oktober 2004, 12:00 |
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Referenzen: |
http://rt.cpan.org/NoAuth/Bug.html?id=8077
http://www.idefense.com/application/poi/display?id=153 |
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Applikationen: |
ArchiveZip |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200410-31 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low Title: Archive::Zip: Virus detection evasion Date: October 29, 2004 Bugs: #68616 ID: 200410-31
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Synopsis ========
Email virus scanning software relying on Archive::Zip can be fooled into thinking a ZIP attachment is empty while it contains a virus, allowing detection evasion.
Background ==========
Archive::Zip is a Perl module containing functions to handle ZIP archives.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-perl/Archive-Zip < 1.14 >= 1.14
Description ===========
Archive::Zip can be used by email scanning software (like amavisd-new) to uncompress attachments before virus scanning. By modifying the uncompressed size of archived files in the global header of the ZIP file, it is possible to fool Archive::Zip into thinking some files inside the archive have zero length.
Impact ======
An attacker could send a carefully crafted ZIP archive containing a virus file and evade detection on some email virus-scanning software relying on Archive::Zip for decompression.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Archive::Zip users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-perl/Archive-Zip-1.14"
References ==========
[ 1 ] iDEFENSE Security Advisory 10.18.04 http://www.idefense.com/application/poi/display?id=153 [ 2 ] rt.cpan.org bug #8077 http://rt.cpan.org/NoAuth/Bug.html?id=8077
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200410-31.xml
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License =======
Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/1.0
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