TWiki vulnerable to arbitrary code execution via CGI session files

Overview

TWiki fails to protect the CGI session directory, which may allow an attacker to execute arbitrary code with the privileges of the web server.

Description

TWiki is a web-based collaborative publishing environment. TWiki creates CGI session files in the global /tmp directory, which is generally world readable and writable. By creating CGI session files in this directory, an attacker may be able to execute arbitrary code.

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Impact

An attacker with the ability to create files in the CGI session directory (usually /tmp) may be able to execute arbitrary code with the privileges of the web server.

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Solution

Apply an update

This issue is addressed in TWikiRelease04x01x01, as specified in TWiki SecurityAlert-CVE-2007-0669.

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Workarounds

TWiki SecurityAlert-CVE-2007-0669 suggests several workarounds, including:

* ` Restrict access to the TWiki server on file level and HTTP.`
* ` If on a shared host, move TWiki to a dedicated host.`
* ` Upgrade to TWikiRelease04x01x01 -- TWiki-4.1.1.zip (recommended)`
* ` Apply a hotfix indicated below. `  

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Vendor Information

584436

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TWiki __ Affected

Updated: February 08, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please see TWiki SecurityAlert-CVE-2007-0669.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23584436 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://twiki.org/cgi-bin/view/Codev/SecurityAlert-CVE-2007-0669&gt;
• <http://secunia.com/advisories/24091/&gt;

Acknowledgements

Thanks to Peter Thoeny for reporting this vulnerability.

This document was written by Will Dormann.

Other Information

CVE IDs:	CVE-2007-0669
Severity Metric:	5.91 Date Public: