{"id":"UBUNTU-CVE-2011-2516","details":"Off-by-one error in the XML signature feature in Apache XML Security for C++ 1.6.0, as used in Shibboleth before 2.4.3 and possibly other products, allows remote attackers to cause a denial of service (crash) via a signature using a large RSA key, which triggers a buffer overflow.","modified":"2025-07-16T07:30:47.249824Z","published":"2011-07-11T20:55:00Z","withdrawn":"2025-07-18T16:42:43Z","upstream":["CVE-2011-2516"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2011-2516"},{"type":"REPORT","url":"http://santuario.apache.org/secadv/CVE-2011-2516.txt"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2011-2516"}],"affected":[{"package":{"name":"shibboleth-sp2","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/shibboleth-sp2@2.5.2+dfsg-2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.2+dfsg-2"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libapache2-mod-shib2","binary_version":"2.5.2+dfsg-2"},{"binary_name":"libshibsp-dev","binary_version":"2.5.2+dfsg-2"},{"binary_version":"2.5.2+dfsg-2","binary_name":"libshibsp-doc"},{"binary_name":"libshibsp6","binary_version":"2.5.2+dfsg-2"},{"binary_name":"shibboleth-sp2-schemas","binary_version":"2.5.2+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2011/UBUNTU-CVE-2011-2516.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}