{"id":"UBUNTU-CVE-2023-36054","details":"lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.","modified":"2026-04-22T14:08:13.587579Z","published":"2023-08-07T19:15:00Z","related":["USN-6467-1","USN-6467-2"],"upstream":["CVE-2023-36054"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-36054"},{"type":"REPORT","url":"https://web.mit.edu/kerberos/www/advisories/"},{"type":"REPORT","url":"https://github.com/krb5/krb5/compare/krb5-1.20.1-final...krb5-1.20.2-final"},{"type":"REPORT","url":"https://github.com/krb5/krb5/compare/krb5-1.21-final...krb5-1.21.1-final"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6467-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6467-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-36054"}],"affected":[{"package":{"name":"krb5","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/krb5@1.12+dfsg-2ubuntu5.4+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12+dfsg-2ubuntu5.4+esm4"}]}],"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","1.12+dfsg-2ubuntu5.4","1.12+dfsg-2ubuntu5.4+esm1","1.12+dfsg-2ubuntu5.4+esm2","1.12+dfsg-2ubuntu5.4+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.12+dfsg-2ubuntu5.4+esm4","binary_name":"krb5-admin-server"},{"binary_name":"krb5-gss-samples","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"krb5-kdc","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"krb5-kdc-ldap","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"krb5-locales","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_version":"1.12+dfsg-2ubuntu5.4+esm4","binary_name":"krb5-multidev"},{"binary_name":"krb5-otp","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"krb5-pkinit","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"krb5-user","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libgssapi-krb5-2","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libgssrpc4","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libk5crypto3","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libkadm5clnt-mit9","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libkadm5srv-mit8","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libkadm5srv-mit9","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_version":"1.12+dfsg-2ubuntu5.4+esm4","binary_name":"libkdb5-7"},{"binary_name":"libkrad0","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libkrb5-3","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"},{"binary_name":"libkrb5support0","binary_version":"1.12+dfsg-2ubuntu5.4+esm4"}],"availability":"Available 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