Thu Oct 21 19:36:32 UTC 202120211021193632

a/lvm2-2.03.13-x86_64-1.txz:  Upgraded.
  Reverted to working version.
d/rust-1.56.0-x86_64-1.txz:  Upgraded.
l/pipewire-0.3.39-x86_64-1.txz:  Upgraded.
n/krb5-1.19.2-x86_64-2.txz:  Rebuilt.
  [PATCH] Fix KDC null deref on TGS inner body null server.
  This fixes an issue where an authenticated attacker can cause a denial of
  service in the KDC by sending a FAST TGS request with no server field.
  Thanks to nobodino.
  For more information, see:
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37750
  (* Security fix *)
x/ibus-m17n-1.4.8-x86_64-1.txz:  Upgraded.
x/libinput-1.19.2-x86_64-1.txz:  Upgraded.
xap/freerdp-2.4.1-x86_64-1.txz:  Upgraded.
  This update fixes two security issues:
  Improper client input validation for gateway connections allows to overwrite
  memory.
  Improper region checks in all clients allow out of bound write to memory.
  For more information, see:
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41159
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41160
  (* Security fix *)
xap/gftp-2.7.1b-x86_64-1.txz:  Upgraded.
extra/php8/php8-8.0.12-x86_64-1.txz:  Upgraded.
  This update fixes bugs and a security issue:
  FPM: PHP-FPM oob R/W in root process leading to privilege escalation.
  For more information, see:
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21703
  (* Security fix *)

2 files changed, 46 insertions, 1 deletions

diff --git a/source/n/krb5/d775c95af7606a51bf79547a94fa52ddd1cb7f49.patch b/source/n/krb5/d775c95af7606a51bf79547a94fa52ddd1cb7f49.patch
new file mode 100644
index 000000000..7623d8292
--- /dev/null
+++ b/source/n/krb5/d775c95af7606a51bf79547a94fa52ddd1cb7f49.patch
@@ -0,0 +1,43 @@
+From d775c95af7606a51bf79547a94fa52ddd1cb7f49 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
+---
+ 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 582e497cc9..32dc65fa8e 100644
+--- a/src/kdc/do_tgs_req.c
++++ b/src/kdc/do_tgs_req.c
+@@ -204,6 +204,11 @@ 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);
diff --git a/source/n/krb5/krb5.SlackBuild b/source/n/krb5/krb5.SlackBuild
index fbc5123a4..e39bf7ed0 100755
--- a/source/n/krb5/krb5.SlackBuild
+++ b/source/n/krb5/krb5.SlackBuild
@@ -26,7 +26,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 
 PKGNAM=krb5
 VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
@@ -79,6 +79,8 @@ find . \
 
 sed -i "/KRB5ROOT=/s/\/local//" src/util/ac_check_krb5.m4
 
+cat $CWD/d775c95af7606a51bf79547a94fa52ddd1cb7f49.patch | patch -p1 --verbose || exit 1
+
 cd src
 
 CFLAGS="$SLKCFLAGS" \