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CVE-2025-32728: Fix logic error in DisableForwarding option

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Resolves: RHEL-86819

Signed-off-by: Zoltan Fridrich <zfridric@redhat.com>
This commit is contained in:
Zoltan Fridrich 2025-04-29 10:58:40 +02:00
parent f218c44b65
commit f4e43bc272
2 changed files with 30 additions and 3 deletions
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22
openssh-9.9p1-disable-forwarding.patch Normal file
View File

@ -0,0 +1,22 @@
diff --color -ruNp a/session.c b/session.c
--- a/session.c 2025-04-29 11:20:59.475107377 +0200
+++ b/session.c 2025-04-29 11:23:16.638538968 +0200
@@ -2284,7 +2284,8 @@ session_auth_agent_req(struct ssh *ssh,
if ((r = sshpkt_get_end(ssh)) != 0)
sshpkt_fatal(ssh, r, "%s: parse packet", __func__);
if (!auth_opts->permit_agent_forwarding_flag ||
- !options.allow_agent_forwarding) {
+ !options.allow_agent_forwarding ||
+ options.disable_forwarding) {
debug_f("agent forwarding disabled");
return 0;
}
@@ -2709,7 +2710,7 @@ session_setup_x11fwd(struct ssh *ssh, Se
ssh_packet_send_debug(ssh, "X11 forwarding disabled by key options.");
return 0;
}
- if (!options.x11_forwarding) {
+ if (!options.x11_forwarding || options.disable_forwarding) {
debug("X11 forwarding disabled in server configuration file.");
return 0;
}

11
openssh.spec
View File

@ -43,7 +43,7 @@
Summary: An open source implementation of SSH protocol version 2
Name: openssh
Version: %{openssh_ver}
Release: 8%{?dist}
Release: 9%{?dist}
URL: http://www.openssh.com/portable.html
Source0: ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz
Source1: ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz.asc
@ -208,6 +208,8 @@ Patch1021: openssh-9.9p2-error_processing.patch
Patch1022: openssh-9.9p1-openssl-mlkem.patch
# upstream 8eabd2ae2ca1d7756417a1ee5b41f09c5d997634
Patch1023: openssh-9.9p1-compression-directive.patch
# upstream fc86875e6acb36401dfc1dfb6b628a9d1460f367
Patch1024: openssh-9.9p1-disable-forwarding.patch
License: BSD-3-Clause AND BSD-2-Clause AND ISC AND SSH-OpenSSH AND ssh-keyscan AND sprintf AND LicenseRef-Fedora-Public-Domain AND X11-distribute-modifications-variant
Requires: /sbin/nologin
@ -232,8 +234,6 @@ BuildRequires: systemd-rpm-macros
BuildRequires: gcc make
BuildRequires: p11-kit-devel
BuildRequires: libfido2-devel
#XXX: temporary, until we have OpenSSL 3.5
BuildRequires: oqsprovider
Recommends: p11-kit
Obsoletes: openssh-ldap < 8.3p1-4
Obsoletes: openssh-cavs < 8.4p1-5
@ -398,6 +398,7 @@ gpgv2 --quiet --keyring %{SOURCE3} %{SOURCE1} %{SOURCE0}
%patch -P 1021 -p1 -b .errcode_set
%patch -P 1022 -p1 -b .openssl-mlkem
%patch -P 1023 -p1 -b .compression
%patch -P 1024 -p1 -b .disable-forwarding
%patch -P 100 -p1 -b .coverity
@ -678,6 +679,10 @@ test -f %{sysconfig_anaconda} && \
%attr(0755,root,root) %{_libdir}/sshtest/sk-dummy.so
%changelog
* Tue Apr 29 2025 Zoltan Fridrich <zfridric@redhat.com> - 9.9p1-9
- CVE-2025-32728: Fix logic error in DisableForwarding option
Resolves: RHEL-86819
* Thu Mar 20 2025 Dmitry Belyavskiy <dbelyavs@redhat.com> - 9.9p1-8
- OpenSSH should not use its own implementation of MLKEM
Resolves: RHEL-58252