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Vulnerability Alert

Mozilla Firefox, Thunderbird, and SeaMonkey CSP Headers Processing Cross-Site Scripting Vulnerability

 
Threat Type:CWE-79: Cross-Site Scripting (XSS)
IntelliShield ID:25413
Version:3
First Published:2012 March 14 22:25 GMT
Last Published:2012 June 29 12:53 GMT
Port: Not available
CVE:CVE-2012-0451
BugTraq ID:52463
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.2
 
 
Version Summary:

Oracle has released security advisories and patches to address the Mozilla Firefox, Thunderbird, and SeaMonkey CSP headers processing cross-site scripting vulnerability.

 
 
Description

Mozilla Firefox, Thunderbird, and SeaMonkey contain a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks.

The vulnerability exists because the affected software fails to perform sufficient sanitization on user-supplied input.? An unauthenticated, remote attacker could exploit this vulnerability by persuading a user to visit a malicious web page.? Successful exploitation could allow the attacker to execute arbitrary script code in the user's browser session.

Mozilla has confirmed this vulnerability and released updated software.

 
Warning Indicators

The following Mozilla products are vulnerable:

  • Firefox versions prior to 11.0 and ESR 10.0.3
  • Thunderbird versions prior to 11.0 and ESR 10.0.3
  • SeaMonkey versions prior to 2.8
 
IntelliShield Analysis

To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.

 
Vendor Announcements

Mozilla has released a security advisory at the following link: MFSA-2012-15

FreeBSD has released a VuXML document at the following link: mozilla -- multiple vulnerabilities

Oracle has released security advisories at the following links:

Multiple vulnerabilities in Thunderbird
Multiple vulnerabilities in Firefox web browser

Red Hat has released security advisories at the following links: RHSA-2012-0387 and RHSA-2012-0388

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary HTML code within the security context of the affected software.? A successful exploit could allow the attacker to steal sensitive, cookie-based information, including authentication credentials or recently submitted data.

 
Technical Information

The vulnerability is due to insufficient sanitization performed on user-supplied input received through Content Security Policy (CSP) headers.? The vulnerable code incorrectly parses the CRLF character sequences that are encountered while processing?the CSP?headers, resulting in an additive effect policy rule that makes the affected software vulnerable to further injection attacks.

An unauthenticated, remote attacker could exploit this vulnerability by persuading a user to visit a malicious web page.? Successful exploitation could allow the attacker to execute arbitrary scripts in the user's browser session.

 
Safeguards

Administrators are advised to apply the appropriate updates.

Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.

Administrators are advised to monitor affected systems.

 
Patches/Software

Mozilla has released updated software at the following links:

Firefox 11.0
Firefox ESR 10.0.3
Thunderbird 11.0
Thunderbird ESR 10.0.3
SeaMonkey 2.8

CentOS packages can be updated using the up2date or yum command.

FreeBSD releases ports collection updates at the following link: Ports Collection Index

Oracle has released patches for registered users at the following link: Solaris 11 11/11 SRU 8.5

Red Hat packages can be updated using the up2date or yum command.

 
Alert History
 

Version 2, March 19, 2012, 1:19 PM: FreeBSD has released a VuXML document and updated ports collection to address the Mozilla Firefox, Thunderbird, and SeaMonkey CSP headers processing cross-site scripting vulnerability.  CentOS has also released updated packages to address this vulnerability.

Version 1, March 14, 2012, 5:25 PM: Mozilla Firefox, Thunderbird, and SeaMonkey contain a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks.  Updates are available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Mozilla FoundationFirefox 10.0 Base, .2, .1
Mozilla FoundationFirefox ESR 10.0 .1, .2
Mozilla FoundationSeaMonkey 2.0 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9, .10, .11, .12, .13, .14 | 2.1 Base | 2.2 Base | 2.3 Base, .1, .2, .3 | 2.4 Base, .1 | 2.5 Base | 2.6 .1 | 2.7 Base, .1
Mozilla FoundationThunderbird 10.0 Base, .1, .2
Mozilla FoundationThunderbird ESR 10.0 .1, .2

Associated Products:
CentOS ProjectCentOS 5 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64, .3 i386, .3 x86_64, .4 i386, .4 x86_64, .5 i386, .5 x86_64 | 6 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 9.0 Base
Oracle CorporationSolaris Express 11 2010.11
Red Hat, Inc.Red Hat Enterprise Linux 5 IA-32, IA-64, PPC, ppc64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server AUS 6.2 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 5 IA-32, x86_64 | 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop Workstation 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Optional Productivity Applications 5 IA-32, x86-64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.2.z IA-32, PPC, PPC64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64




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