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   VULNERABILITY NOTE

CERT-In Vulnerability Note CIVN-2008-109
Mozilla Firefox URI Splitting Security Bypass Vulnerability

Original Issue Date: July 23, 2008

Severity Rating: Medium

System Affected

  • Firefox version 3.x
  • Firefox version prior to 2.0.0.16

Overview

A vulnerability has been reported in Mozilla Firefox which could allow an attacker to bypass certain security restrictions by opening a specially crafted URIs.

Description

This vulnerability is caused due to an error in processing URIs passed to Firefox upon invocation from other applications using command line interface with pipe ("|") symbols within the URI.

This vulnerability can be exploited by an attacker by using a specially crafted URI send to Firefox via its command line interface. Successful exploitation of this vulnerability could allow an attacker to spoof or inject URIs into multiple tabs in the newly created Firefox session. This vulnerability can also be exploited in combination with input validation vulnerability in an XUL-based error page, to execute arbitrary code on the target user's system.

Solutions

Firefox 3.x:
Upgrade to version 3.0.1.
http://www.mozilla.com/en-US/firefox/

Firefox 2.0.x:
Upgrade to version 2.0.0.16.
http://www.mozilla.com/en-US/firefox/all-older.html

Vendor Information

Mozilla
http://www.mozilla.org/security/announce/2008/mfsa2008-35.html

References

SecurityFocus
http://www.securityfocus.com/bid/30242

US-CERT
http://www.kb.cert.org/vuls/id/130923

SecurityTracker http://securitytracker.com/alerts/2008/Jul/1020509.html

CVE Name
CVE-2008-2933

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information


Phone: +91-11-24368572

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Communications and Information Technology
Electronics Niketan
6, C.G.O. Complex
New Delhi-110 003