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CVE-2011-2990

5.0 · MEDIUM

The implementation of Content Security Policy (CSP) violation reports in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, and possibly other products does not remove proxy-authorization cre…

Published Aug 18, 2011mozillaCWE-255EPSS 0.97%

Overview

CVE-2011-2990 is a medium-severity vulnerability affecting mozilla firefox. It was published on August 18, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The implementation of Content Security Policy (CSP) violation reports in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, and possibly other products does not remove proxy-authorization credentials from the listed request headers, which allows attackers to obtain sensitive information by reading a report, related to incorrect host resolution that occurs with certain redirects.

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

References

Reflists.opensuse.org/opensuse-security-announce/2011-08/msg00023.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-29.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-33.htmlRefbugzilla.mozilla.org/show_bug.cgi?id=664983Refbugzilla.mozilla.org/show_bug.cgi?id=679588Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14458Reflists.opensuse.org/opensuse-security-announce/2011-08/msg00023.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-29.htmlRefwww.mozilla.org/security/announce/2011/mfsa2011-33.htmlRefbugzilla.mozilla.org/show_bug.cgi?id=664983

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2990?

CVE-2011-2990 is a medium-severity vulnerability affecting mozilla firefox. It was published on August 18, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-2990?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-2990?

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-2011-2990?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2990 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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