Open Technology Real Services cross-site scripting vulnerability

Overview

Open Technology Real Services (OTRS) is susceptible to a cross-site scripting vulnerability.

Description

Open Technology Real Services (OTRS) contains a cross-site scripting (CWE-79) vulnerability in the email body. An attacker may be able to load arbitrary script in the context of the user’s browser when they view a specifically crafted email message.

Proof-of-Concept:

* `<div>`
* `exp/*&lt;XSS STYLE='no\xss:noxss("*//*");xss:&#101;x&#x2F;*XSS*//*/*/pression(alert("XSS"))'&gt;`
* `<img>`
* `&lt;XSS STYLE="xss:expression(alert('XSS'))"&gt;`
* `&lt;HEAD&gt;&lt;META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=UTF-7"&gt; &lt;/HEAD&gt;+ADw-SCRIPT+AD4-alert('XSS');+ADw-/SCRIPT+AD4-`

Additional details may be found in the OTRS advisory.

Impact

An attacker may be able to execute arbitrary script in the context of the user’s browser.

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Solution

Apply an Update
The OTRS advisory states:
_This vulnerability is fixed in OTRS 2.4.13, 3.0.15 and 3.1.9 as well as in in OTRS::ITSM 3.1.6, 3.0.6 and 2.1.5. and it is recommended to upgrade to one of these versions. _

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Vendor Information

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OTRS Affected

Notified: July 13, 2012 Updated: August 22, 2012

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

• <http://www.otrs.com/en/open-source/community-news/security-advisories/security-advisory-2012-01/&gt;

CVSS Metrics

Group	Score	Vector
Base	6.1	AV:N/AC:H/Au:N/C:P/I:C/A:N
Temporal	4.8	E:POC/RL:OF/RC:C
Environmental	4.8	CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

References

• <http://www.otrs.com/en/open-source/community-news/security-advisories/security-advisory-2012-01/&gt;
• <http://cwe.mitre.org/data/definitions/79.html&gt;

Acknowledgements

Thanks to Devon Kearns of Offensive Security for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

CVE IDs:	CVE-2012-2582
Date Public:	2012-08-22 Date First Published: