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CVE-2012-0475

2.6 · LOW

Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and Sec-WebSocket-Origin HTTP headers, which might allow remote attacke…

Published Apr 25, 2012mozillaCWE-264EPSS 1.85%

Overview

CVE-2012-0475 is a low-severity vulnerability affecting mozilla firefox. It was published on April 25, 2012 and has a CVSS 2.0 base score of 2.6 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Mozilla Firefox 4.x through 11.0, Thunderbird 5.0 through 11.0, and SeaMonkey before 2.9 do not properly construct the Origin and Sec-WebSocket-Origin HTTP headers, which might allow remote attackers to bypass an IPv6 literal ACL via a cross-site (1) XMLHttpRequest or (2) WebSocket operation involving a nonstandard port number and an IPv6 address that contains certain zero fields.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
mozillaseamonkey0Affected

References

Refsecunia.com/advisories/48972Refsecunia.com/advisories/49047Refsecunia.com/advisories/49055Refwww.mozilla.org/security/announce/2012/mfsa2012-28.htmlRefwww.securityfocus.com/bid/53230Refbugzilla.mozilla.org/show_bug.cgi?id=694576Refexchange.xforce.ibmcloud.com/vulnerabilities/75153Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16279Refsecunia.com/advisories/48972Refsecunia.com/advisories/49047

How CyberStrike helps

Frequently asked questions

What is CVE-2012-0475?

CVE-2012-0475 is a low-severity vulnerability affecting mozilla firefox. It was published on April 25, 2012 and has a CVSS 2.0 base score of 2.6 (LOW).

How severe is CVE-2012-0475?

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-0475?

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-0475?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-0475 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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