What’s Vulnerable › Vulnerabilities

CVE-2013-1812

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-12-12 · updated 2026-06-16
• Weakness: CWE-399

Description

The ruby-openid gem before 2.2.2 for Ruby allows remote OpenID providers to cause a denial of service (CPU consumption) via (1) a large XRDS document or (2) an XML Entity Expansion (XEE) attack.

Affected products

• Fedoraproject Fedora: 17, 18
• Janrain Ruby-Openid: through 2.2.1; 2.2.0

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-November/120204.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-November/120361.html
• http://www.openwall.com/lists/oss-security/2013/03/03/8
• https://bugzilla.redhat.com/show_bug.cgi?id=918134
• https://github.com/openid/ruby-openid/blob/master/CHANGELOG.md
• https://github.com/openid/ruby-openid/commit/a3693cef06049563f5b4e4824f4d3211288508ed
• https://github.com/openid/ruby-openid/pull/43
• http://lists.fedoraproject.org/pipermail/package-announce/2013-November/120204.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-November/120361.html
• http://www.openwall.com/lists/oss-security/2013/03/03/8
• https://bugzilla.redhat.com/show_bug.cgi?id=918134
• https://github.com/openid/ruby-openid/blob/master/CHANGELOG.md

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