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Home >> Browse Vulnerability Assessment Database >> Red Hat Local Security Checks >> RHSA-2003-200: unzip


Vulnerability Assessment Details

RHSA-2003-200: unzip

Vulnerability Assessment Summary
Check for the version of the unzip packages

Detailed Explanation for this Vulnerability Assessment


Updated unzip packages resolving a vulnerability permiting arbitrary files
to be overwritten are now available.

[Updated 15 August 2003]
Ben Laurie found that the original patch to fix this issue missed a case
where the path component included a quoted slash. These updated packages
contain a new patch that corrects this issue.

The unzip utility is used for manipulating archives, which are multiple
files stored inside of a single file.

A vulnerabilitiy in unzip version 5.50 and earlier permits attackers to
overwrite arbitrary files during archive extraction by placing invalid
(non-printable) characters between two "." characters. These non-printable
characters are filtered, resulting in a ".." sequence. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CVE-2003-0282 to this issue.

This erratum includes a patch ensuring that non-printable characters do not
make it possible for a malicious .zip file to write to parent directories
unless the "-:" command line parameter is specified.

Users of unzip are advised to upgrade to these updated packages, which are
not vulnerable to this issue.




Solution : http://rhn.redhat.com/errata/RHSA-2003-200.html
Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security

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