CVE-2012-0465

CVE-2012-0465 is a medium-severity vulnerability in Mozilla Bugzilla with a CVSS 2.0 base score of 4.3. 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-264.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 1% (65th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-264
• Affected product: Mozilla Bugzilla
• Published: 2012-04-27
• Last modified: 2026-06-16

Description

Bugzilla 3.5.x and 3.6.x before 3.6.9, 3.7.x and 4.0.x before 4.0.6, and 4.1.x and 4.2.x before 4.2.1, when the inbound_proxies option is enabled, does not properly validate the X-Forwarded-For HTTP header, which allows remote attackers to bypass the lockout policy via a series of authentication requests with (1) different IP address strings in this header or (2) a long string in this header.

Frequently asked questions

What is CVE-2012-0465?

Bugzilla 3.5.x and 3.6.x before 3.6.9, 3.7.x and 4.0.x before 4.0.6, and 4.1.x and 4.2.x before 4.2.1, when the inbound_proxies option is enabled, does not properly validate the X-Forwarded-For HTTP header, which allows remote attackers to bypass the lockout policy via a series of authentication requests with (1) different IP address strings in this header or (2) a long string in this header.

How severe is CVE-2012-0465?

CVE-2012-0465 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-0465 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0465?

CVE-2012-0465 primarily affects Mozilla Bugzilla. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-0465?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-0465 published?

CVE-2012-0465 was published on 2012-04-27 and last updated on 2026-06-16.

References

• http://archives.neohapsis.com/archives/bugtraq/2012-04/0135.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079432.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079481.html
• http://lists.fedoraproject.org/pipermail/package-announce/2012-May/079604.html
• https://bugzilla.mozilla.org/show_bug.cgi?id=728639

Affected products (26)

• cpe:2.3:a:mozilla:bugzilla:3.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.6.8:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:3.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.2:rc1:*:*:*:*:*:*
• cpe:2.3:a:mozilla:bugzilla:4.2:rc2:*:*:*:*:*:*

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