CVE-2013-6167

CVE-2013-6167 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Description

Mozilla Firefox through 27 sends HTTP Cookie headers without first validating that they have the required character-set restrictions, which allows remote attackers to conduct the equivalent of a persistent Logout CSRF attack via a crafted parameter that forces a web application to set a malformed cookie within an HTTP response.

Frequently asked questions

What is CVE-2013-6167?
Mozilla Firefox through 27 sends HTTP Cookie headers without first validating that they have the required character-set restrictions, which allows remote attackers to conduct the equivalent of a persistent Logout CSRF attack via a crafted parameter that forces a web application to set a malformed cookie within an HTTP response.
How severe is CVE-2013-6167?
CVE-2013-6167 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2013-6167 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6167?
CVE-2013-6167 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-6167?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6167 published?
CVE-2013-6167 was published on 2014-02-15 and last updated on 2026-06-17.

References

Affected products (1)

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