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Horde-Chora: Remote code execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200406-09 / www-apps/horde-chora
Release Date June 15, 2004
Latest Revision December 30, 2007: 02
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apps/horde-chora < 1.2.2 >= 1.2.2 All supported architectures

Related bugreports: #53800


A vulnerability in Chora allows remote code execution and file upload.

2.  Impact Information


Chora is a PHP-based SVN/CVS repository viewer by the HORDE project.


A vulnerability in the diff viewer of Chora allows an attacker to inject shellcode. An attacker can exploit PHP's file upload functionality to upload a malicious binary to a vulnerable server, chmod it as executable, and run the file.


An attacker could remotely execute arbitrary binaries with the permissions of the PHP script, conceivably allowing further exploitation of local vulnerabilities and remote root access.

3.  Resolution Information


There is no known workaround at this time.


All users are advised to upgrade to the latest version of Chora:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=www-apps/horde-chora-1.2.2"
# emerge ">=www-apps/horde-chora-1.2.2"

4.  References


Page updated June 15, 2004

Summary: This is a Gentoo Linux Security Advisory

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