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CVE-2022-2031 s4:kpasswd: Account for missing target principal

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This field is supposed to be optional.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
This commit is contained in:
Joseph Sutton 2022-05-27 19:17:02 +12:00 committed by Jule Anger
parent 2872ccc931
commit b423c370b9
1 changed files with 12 additions and 10 deletions
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2
source4/kdc/kpasswd-service-mit.c
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@ -142,6 +142,7 @@ static krb5_error_code kpasswd_set_password(struct kdc_server *kdc,
return KRB5_KPASSWD_HARDERROR;
}
if (target_principal != NULL) {
target_realm = smb_krb5_principal_get_realm(
mem_ctx, context, target_principal);
code = krb5_unparse_name_flags(context,
@ -153,6 +154,7 @@ static krb5_error_code kpasswd_set_password(struct kdc_server *kdc,
*error_string = "String conversion failed";
return KRB5_KPASSWD_HARDERROR;
}
}
if ((target_name != NULL && target_realm == NULL) ||
(target_name == NULL && target_realm != NULL)) {