The add_to_history function in svr_principal.c in libkadm5srv for MIT
Kerberos 5 (krb5) up to 1.3.5, when performing a password change, does
not properly track the password policy's history count and the maximum
number of keys, which can cause an array index out-of-bounds error
and may allow authenticated users to execute arbitrary code via a
heap-based buffer overflow.
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