36 lines
1.5 KiB
Diff
36 lines
1.5 KiB
Diff
From e1b2c967266b14bc37e5ed11e6c0525bd259e0bb Mon Sep 17 00:00:00 2001
|
|
From: Isaac Boukris <iboukris@gmail.com>
|
|
Date: Sat, 6 Jun 2020 11:03:37 +0200
|
|
Subject: [PATCH] Omit PA_FOR_USER if we can't compute its checksum
|
|
|
|
OpenSSL in FIPS mode will refuse to perform hmac-md5. Omit the legacy
|
|
PA_FOR_USER element in this case rather than failing out.
|
|
|
|
[ghudson@mit.edu: minor code and comment edits; wrote commit message]
|
|
|
|
ticket: 8912 (new)
|
|
(cherry picked from commit 03f122bdb22cfa53c7d855ed929c9541e56365e0)
|
|
(cherry picked from commit 086de78292b8ae89aba8a72926831124da44205d)
|
|
---
|
|
src/lib/krb5/krb/s4u_creds.c | 7 +++++++
|
|
1 file changed, 7 insertions(+)
|
|
|
|
diff --git a/src/lib/krb5/krb/s4u_creds.c b/src/lib/krb5/krb/s4u_creds.c
|
|
index fc5c886d6..d8f486dc6 100644
|
|
--- a/src/lib/krb5/krb/s4u_creds.c
|
|
+++ b/src/lib/krb5/krb/s4u_creds.c
|
|
@@ -534,6 +534,13 @@ krb5_get_self_cred_from_kdc(krb5_context context,
|
|
if (s4u_user.user_id.user != NULL && s4u_user.user_id.user->length) {
|
|
code = build_pa_for_user(context, tgtptr, &s4u_user.user_id,
|
|
&in_padata[1]);
|
|
+ /*
|
|
+ * If we couldn't compute the hmac-md5 checksum, send only the
|
|
+ * KRB5_PADATA_S4U_X509_USER; this will still work against modern
|
|
+ * Windows and MIT KDCs.
|
|
+ */
|
|
+ if (code == KRB5_CRYPTO_INTERNAL)
|
|
+ code = 0;
|
|
if (code != 0) {
|
|
krb5_free_pa_data(context, in_padata);
|
|
goto cleanup;
|