Mozilla Firefox, Thunderbird, and SeaMonkey top.location cross-site scripting

firefox-toplocation-xss (80181) The risk level is classified as MediumMedium Risk

Description:

Mozilla Firefox, Thunderbird, and SeaMonkey are vulnerable to cross-site scripting, caused by an error related to the location property being accessed by binary plugins through top.location. A remote attacker could exploit this vulnerability to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

*CVSS:

Base Score: 4.3
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to MFSA 2012-103 for patch, upgrade or suggested workaround information. See References.

References:

  • MFSA 2012-103: Frames can shadow top.location.
  • BID-56629: Mozilla Firefox/Thunderbird/SeaMonkey CVE-2012-4209 Cross Site Scripting Vulnerability
  • CVE-2012-4209: Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 do not prevent use of a top frame name-attribute value to access the location property, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a binary plugin.
  • OSVDB ID: 87585: Mozilla Multiple Product location Property Shadowing XSS Weakness
  • SA51358: Mozilla Firefox / Thunderbird Multiple Vulnerabilities
  • SA51381: Mozilla SeaMonkey Multiple Vulnerabilities
  • SA51382: Mozilla Firefox / Thunderbird Multiple Vulnerabilities

Platforms Affected:

  • Mozilla Firefox 16
  • Mozilla Firefox ESR 10.0.10
  • Mozilla Seamonkey 2.13
  • Mozilla Thunderbird 16.0
  • Mozilla Thunderbird ESR 10.0.10

Reported:

Nov 20, 2012

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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