What’s Vulnerable › Vulnerabilities

CVE-2011-2605

• Severity: medium (CVSS 4.3 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: 2011-06-30 · updated 2026-06-16
• Weakness: CWE-94

Description

CRLF injection vulnerability in the nsCookieService::SetCookieStringInternal function in netwerk/cookie/nsCookieService.cpp in Mozilla Firefox before 3.6.18 and 4.x through 4.0.1, and Thunderbird before 3.1.11, allows remote attackers to bypass intended access restrictions via a string containing a \n (newline) character, which is not properly handled in a JavaScript "document.cookie =" expression, a different vulnerability than CVE-2011-2374.

Affected products

• Mozilla Firefox: through 3.6.17; 1.0, 1.0-preview_release, 1.0.1, 1.0.2, 1.0.3, 1.0.4 (+115)
• Mozilla Thunderbird: through 3.1.10; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+77)

References

• http://www.mozilla.org/security/announce/2011/mfsa2011-19.html
• http://www.redhat.com/support/errata/RHSA-2011-0885.html
• http://www.redhat.com/support/errata/RHSA-2011-0886.html
• http://www.redhat.com/support/errata/RHSA-2011-0887.html
• http://www.redhat.com/support/errata/RHSA-2011-0888.html
• https://bugzilla.mozilla.org/show_bug.cgi?id=643051
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14401
• http://www.mozilla.org/security/announce/2011/mfsa2011-19.html
• http://www.redhat.com/support/errata/RHSA-2011-0885.html
• http://www.redhat.com/support/errata/RHSA-2011-0886.html
• http://www.redhat.com/support/errata/RHSA-2011-0887.html
• http://www.redhat.com/support/errata/RHSA-2011-0888.html

Get alerted when CVE-2011-2605 or the next vulnerability affects your stack