CVE-2023-36054

Summary

CVE-2023-36054 is a vulnerability affecting MIT Kerberos 5 (krb5) versions before 1.20.2 and 1.21.x before 1.21.1. The issue lies in the lib/kadm5/kadm_rpc_xdr.c file, where the function _xdr_kadm5_principal_ent_rec fails to validate the relationship between n_key_data and the key_data array count. This leads to an uninitialized pointer being freed, causing a kadmind crash. A remote authenticated user can exploit this vulnerability to trigger the crash, potentially leading to denial of service or further exploitation.

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