Archive::Zip may not properly parse the file sizes of Zip archives

ID VU:492545
Type cert
Reporter CERT
Modified 2004-11-15T00:00:00



Archive::Zip does not properly parse Zip files and may incorrectly interpret malformed zip archives to contain zero length/size files. As a a result, anti-virus software using Archive::Zip may fail to detect malicious content within a Zip archive.


The Archive::Zip module allows PERL programs to manipulate Zip archives. An attacker may be able to create a specially crafted Zip archive that could cause Archive::Zip to interpret files in the archive as having zero length. If anti-virus software is using Archive::Zip to scan Zip attachments, it may fail to detect the malicious content and allow the archive into the system.


A remote attacker may be able to craft a malicious Zip archive that will evade detection by anti-virus software using Archive::Zip. Once in the system, if the remote attacker can persuade the user to accesses the malicious archive, the attacker may be able to execute arbitrary code on that user's system, possibly with administrator privileges.


Upgrade Archive::Zip

This issue has been addressed in Archive::Zip version 1.4.

Systems Affected

Vendor| Status| Date Notified| Date Updated
CPAN| | -| 12 Nov 2004
If you are a vendor and your product is affected, let us know.

CVSS Metrics

Group | Score | Vector
Base | N/A | N/A
Temporal | N/A | N/A
Environmental | N/A | N/A


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This vulnerability was publicly reported by iDefense.

This document was written by Jeff Gennari.

Other Information

  • CVE IDs: Unknown
  • Date Public: 18 Oct 2004
  • Date First Published: 12 Nov 2004
  • Date Last Updated: 15 Nov 2004
  • Severity Metric: 3.59
  • Document Revision: 121