{"id":"UBUNTU-CVE-2018-5710","details":"An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function \"strlen\" is getting a \"NULL\" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client.","modified":"2025-09-08T16:44:44Z","published":"2018-01-16T09:29:00Z","upstream":["CVE-2018-5710"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-5710"},{"type":"REPORT","url":"https://github.com/poojamnit/Kerberos-V5-1.16-Vulnerabilities/tree/master/Denial%20Of%20Service(DoS)"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-5710"}],"affected":[{"package":{"name":"krb5","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/krb5@1.12+dfsg-2ubuntu5.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12+dfsg-2ubuntu5.4"}]}],"versions":["1.10.1+dfsg-6.1ubuntu1","1.11.3+dfsg-3ubuntu2","1.12+dfsg-2ubuntu1","1.12+dfsg-2ubuntu2","1.12+dfsg-2ubuntu3","1.12+dfsg-2ubuntu4","1.12+dfsg-2ubuntu4.2","1.12+dfsg-2ubuntu5","1.12+dfsg-2ubuntu5.1","1.12+dfsg-2ubuntu5.2","1.12+dfsg-2ubuntu5.3"],"ecosystem_specific":{"availability":"No subscription 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subscription 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