CVE-2011-2990

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-18 · updated 2026-06-16
Weakness: CWE-255

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.

Affected products

Mozilla Firefox: 4.0, 4.0-beta1, 4.0-beta10, 4.0-beta11, 4.0-beta12, 4.0-beta2 (+9)
Mozilla Seamonkey: 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+53)

References

http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html
http://www.mozilla.org/security/announce/2011/mfsa2011-29.html
http://www.mozilla.org/security/announce/2011/mfsa2011-33.html
https://bugzilla.mozilla.org/show_bug.cgi?id=664983
https://bugzilla.mozilla.org/show_bug.cgi?id=679588
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14458
http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html
http://www.mozilla.org/security/announce/2011/mfsa2011-29.html
http://www.mozilla.org/security/announce/2011/mfsa2011-33.html
https://bugzilla.mozilla.org/show_bug.cgi?id=664983
https://bugzilla.mozilla.org/show_bug.cgi?id=679588
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14458

Get alerted when CVE-2011-2990 or the next vulnerability affects your stack