fix CVE-2023-36054

CVE-2023-36054.patch

@@ -0,0 +1,65 @@
+From ef08b09c9459551aabbe7924fb176f1583053cdd Mon Sep 17 00:00:00 2001
+From: Greg Hudson <ghudson@mit.edu>
+Date: Wed, 21 Jun 2023 10:57:39 -0400
+Subject: [PATCH] Ensure array count consistency in kadm5 RPC
+
+In _xdr_kadm5_principal_ent_rec(), ensure that n_key_data matches the
+key_data array count when decoding.  Otherwise when the structure is
+later freed, xdr_array() could iterate over the wrong number of
+elements, either leaking some memory or freeing uninitialized
+pointers.  Reported by Robert Morris.
+
+CVE-2023-36054:
+
+An authenticated attacker can cause a kadmind process to crash by
+freeing uninitialized pointers.  Remote code execution is unlikely.
+An attacker with control of a kadmin server can cause a kadmin client
+to crash by freeing uninitialized pointers.
+
+ticket: 9099 (new)
+tags: pullup
+target_version: 1.21-next
+target_version: 1.20-next
+---
+ src/lib/kadm5/kadm_rpc_xdr.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/src/lib/kadm5/kadm_rpc_xdr.c b/src/lib/kadm5/kadm_rpc_xdr.c
+index 0411c3fd3..287cae750 100644
+--- a/src/lib/kadm5/kadm_rpc_xdr.c
++++ b/src/lib/kadm5/kadm_rpc_xdr.c
+@@ -390,6 +390,7 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp,
+ 			     int v)
+ {
+ 	unsigned int n;
++	bool_t r;
+ 
+ 	if (!xdr_krb5_principal(xdrs, &objp->principal)) {
+ 		return (FALSE);
+@@ -443,6 +444,9 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp,
+ 	if (!xdr_krb5_int16(xdrs, &objp->n_key_data)) {
+ 		return (FALSE);
+ 	}
++	if (xdrs->x_op == XDR_DECODE && objp->n_key_data < 0) {
++		return (FALSE);
++	}
+ 	if (!xdr_krb5_int16(xdrs, &objp->n_tl_data)) {
+ 		return (FALSE);
+ 	}
+@@ -451,9 +455,10 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp,
+ 		return FALSE;
+ 	}
+ 	n = objp->n_key_data;
+-	if (!xdr_array(xdrs, (caddr_t *) &objp->key_data,
+-		       &n, ~0, sizeof(krb5_key_data),
+-		       xdr_krb5_key_data_nocontents)) {
++	r = xdr_array(xdrs, (caddr_t *) &objp->key_data, &n, objp->n_key_data,
++		      sizeof(krb5_key_data), xdr_krb5_key_data_nocontents);
++	objp->n_key_data = n;
++	if (!r) {
+ 		return (FALSE);
+ 	}
+ 
+-- 
+2.41.0.windows.3
+

krb5.spec

@@ -3,7 +3,7 @@
 
 Name:     krb5
 Version:  1.18.2
-Release:  7
+Release:  8
 Summary:  The Kerberos network authentication protocol
 License:  MIT
 URL:      http://web.mit.edu/kerberos/www/
@@ -30,6 +30,7 @@ Patch7: backport-CVE-2020-28196.patch
 Patch8: backport-CVE-2021-36222.patch
 Patch9: backport-CVE-2021-37750.patch
 Patch10: Fix-CVE-2022-42898-integer-overflows-in-PAC-parsing.patch
+Patch11: CVE-2023-36054.patch
 
 BuildRequires:  gettext
 BuildRequires:  gcc make automake autoconf pkgconfig pam-devel libselinux-devel byacc
@@ -321,6 +322,9 @@ make -C src check || :
 %{_mandir}/man8/*
 
 %changelog
+* Tue Aug 15 2023 liningjie <liningjie@xfusion.com> - 1.18.2-8
+- fix CVE-2023-36054
+
 * Sun Apr 23 2023 wangshuo <wangshuo@kylinos.cn> - 1.18.2-7
 - Fix the Provides version of the devel package