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Trac: File upload vulnerability


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200506-21 / trac
Release Date June 22, 2005
Latest Revision June 22, 2005: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apps/trac < 0.8.4 >= 0.8.4 All supported architectures

Related bugreports: #96572


Trac may allow remote attackers to upload files, possibly leading to the execution of arbitrary code.

2.  Impact Information


Trac is a minimalistic web-based project management, wiki and bug tracking system including a Subversion interface.


Stefan Esser of the Hardened-PHP project discovered that Trac fails to validate the "id" parameter when uploading attachments to the wiki or the bug tracking system.


A remote attacker could exploit the vulnerability to upload arbitrary files to a directory where the webserver has write access to, possibly leading to the execution of arbitrary code.

3.  Resolution Information


There is no known workaround at this time.


All Trac users should upgrade to the latest available version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/trac-0.8.4"

4.  References


Page updated June 22, 2005

Summary: This is a Gentoo Linux Security Advisory

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