import krb5-1.18.2-14.el8
This commit is contained in:
parent
64ad99e3d3
commit
79ef8ae9e1
@ -0,0 +1,47 @@
|
||||
From 0a8dfc380fe3b210662ba1b1d452fcec2f84841b Mon Sep 17 00:00:00 2001
|
||||
From: Greg Hudson <ghudson@mit.edu>
|
||||
Date: Tue, 3 Aug 2021 01:15:27 -0400
|
||||
Subject: [PATCH] Fix KDC null deref on TGS inner body null server
|
||||
|
||||
After the KDC decodes a FAST inner body, it does not check for a null
|
||||
server. Prior to commit 39548a5b17bbda9eeb63625a201cfd19b9de1c5b this
|
||||
would typically result in an error from krb5_unparse_name(), but with
|
||||
the addition of get_local_tgt() it results in a null dereference. Add
|
||||
a null check.
|
||||
|
||||
Reported by Joseph Sutton of Catalyst.
|
||||
|
||||
CVE-2021-37750:
|
||||
|
||||
In MIT krb5 releases 1.14 and later, an authenticated attacker can
|
||||
cause a null dereference in the KDC by sending a FAST TGS request with
|
||||
no server field.
|
||||
|
||||
ticket: 9008 (new)
|
||||
tags: pullup
|
||||
target_version: 1.19-next
|
||||
target_version: 1.18-next
|
||||
|
||||
(cherry picked from commit d775c95af7606a51bf79547a94fa52ddd1cb7f49)
|
||||
(cherry picked from commit bb8fa495d00ccd931eec87a01b8920636cf7903e)
|
||||
(cherry picked from commit dfe383f8251d0edc7e5e08ec5e4fdd9b7f902b2a)
|
||||
---
|
||||
src/kdc/do_tgs_req.c | 5 +++++
|
||||
1 file changed, 5 insertions(+)
|
||||
|
||||
diff --git a/src/kdc/do_tgs_req.c b/src/kdc/do_tgs_req.c
|
||||
index 463a9c0dd..7c596a111 100644
|
||||
--- a/src/kdc/do_tgs_req.c
|
||||
+++ b/src/kdc/do_tgs_req.c
|
||||
@@ -208,6 +208,11 @@ process_tgs_req(krb5_kdc_req *request, krb5_data *pkt,
|
||||
status = "FIND_FAST";
|
||||
goto cleanup;
|
||||
}
|
||||
+ if (sprinc == NULL) {
|
||||
+ status = "NULL_SERVER";
|
||||
+ errcode = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN;
|
||||
+ goto cleanup;
|
||||
+ }
|
||||
|
||||
errcode = get_local_tgt(kdc_context, &sprinc->realm, header_server,
|
||||
&local_tgt, &local_tgt_storage, &local_tgt_key);
|
@ -18,7 +18,7 @@ Summary: The Kerberos network authentication system
|
||||
Name: krb5
|
||||
Version: 1.18.2
|
||||
# for prerelease, should be e.g., 0.% {prerelease}.1% { ?dist } (without spaces)
|
||||
Release: 13%{?dist}
|
||||
Release: 14%{?dist}
|
||||
|
||||
# lookaside-cached sources; two downloads and a build artifact
|
||||
Source0: https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}%{prerelease}.tar.gz
|
||||
@ -85,6 +85,7 @@ Patch139: Make-KCM-iteration-fallback-work-with-sssd-kcm.patch
|
||||
Patch140: Use-KCM_OP_RETRIEVE-in-KCM-client.patch
|
||||
Patch141: Fix-KCM-retrieval-support-for-sssd.patch
|
||||
Patch142: Fix-KDC-null-deref-on-bad-encrypted-challenge.patch
|
||||
Patch143: Fix-KDC-null-deref-on-TGS-inner-body-null-server.patch
|
||||
|
||||
License: MIT
|
||||
URL: http://web.mit.edu/kerberos/www/
|
||||
@ -695,6 +696,10 @@ exit 0
|
||||
%{_libdir}/libkadm5srv_mit.so.*
|
||||
|
||||
%changelog
|
||||
* Wed Aug 25 2021 Robbie Harwood <rharwood@redhat.com> - 1.18.2-14
|
||||
- Fix KDC null deref on TGS inner body null server (CVE-2021-37750)
|
||||
- Resolves: #1997601
|
||||
|
||||
* Tue Jul 20 2021 Robbie Harwood <rharwood@redhat.com> - 1.18.2-13
|
||||
- Fix KDC null deref on bad encrypted challenge (CVE-2021-36222)
|
||||
- Resolves: #1983729
|
||||
|
Loading…
Reference in New Issue
Block a user