Fix CVE-2024-28882
(cherry picked from commit 94d84491434ed4e3a79e7c5085b024de0fa5aaac)
This commit is contained in:
zhangxianting
openeuler-sync-bot
parent
a3e6a9f09e
commit
da161fedab
118
CVE-2024-28882.patch
Normal file
118
CVE-2024-28882.patch
Normal file
@ -0,0 +1,118 @@
|
||||
From 65fb67cd6c320a426567b2922c4282fb8738ba3f Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Reynir=20Bj=C3=B6rnsson?= <reynir@reynir.dk>
|
||||
Date: Thu, 16 May 2024 13:58:08 +0200
|
||||
Subject: [PATCH] Only schedule_exit() once
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
If an exit has already been scheduled we should not schedule it again.
|
||||
Otherwise, the exit signal is never emitted if the peer reschedules the
|
||||
exit before the timeout occurs.
|
||||
|
||||
schedule_exit() now only takes the context as argument. The signal is
|
||||
hard coded to SIGTERM, and the interval is read directly from the
|
||||
context options.
|
||||
|
||||
Furthermore, schedule_exit() now returns a bool signifying whether an
|
||||
exit was scheduled; false if exit is already scheduled. The call sites
|
||||
are updated accordingly. A notable difference is that management is only
|
||||
notified *once* when an exit is scheduled - we no longer notify
|
||||
management on redundant exit.
|
||||
|
||||
This patch was assigned a CVE number after already reviewed and ACKed,
|
||||
because it was discovered that a misbehaving client can use the (now
|
||||
fixed) server behaviour to avoid being disconnected by means of a
|
||||
managment interface "client-kill" command - the security issue here is
|
||||
"client can circumvent security policy set by management interface".
|
||||
|
||||
This only affects previously authenticated clients, and only management
|
||||
client-kill, so normal renegotion / AUTH_FAIL ("your session ends") is not
|
||||
affected.
|
||||
|
||||
CVE: 2024-28882
|
||||
|
||||
Change-Id: I9457f005f4ba970502e6b667d9dc4299a588d661
|
||||
Signed-off-by: Reynir Björnsson <reynir@reynir.dk>
|
||||
Acked-by: Arne Schwabe <arne-openvpn@rfc2549.org>
|
||||
Message-Id: <20240516120434.23499-1-gert@greenie.muc.de>
|
||||
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg28679.html
|
||||
Signed-off-by: Gert Doering <gert@greenie.muc.de>
|
||||
(cherry picked from commit 55bb3260c12bae33b6a8eac73cbb6972f8517411)
|
||||
---
|
||||
src/openvpn/forward.c | 15 +++++++++++----
|
||||
src/openvpn/forward.h | 2 +-
|
||||
src/openvpn/push.c | 4 +---
|
||||
3 files changed, 13 insertions(+), 8 deletions(-)
|
||||
|
||||
diff --git a/src/openvpn/forward.c b/src/openvpn/forward.c
|
||||
index 042ba9e..26eca49 100644
|
||||
--- a/src/openvpn/forward.c
|
||||
+++ b/src/openvpn/forward.c
|
||||
@@ -428,17 +428,24 @@ check_server_poll_timeout(struct context *c)
|
||||
}
|
||||
|
||||
/*
|
||||
- * Schedule a signal n_seconds from now.
|
||||
+ * Schedule a SIGTERM signal c->options.scheduled_exit_interval seconds from now.
|
||||
*/
|
||||
-void
|
||||
-schedule_exit(struct context *c, const int n_seconds, const int signal)
|
||||
+bool
|
||||
+schedule_exit(struct context *c)
|
||||
{
|
||||
+ const int n_seconds = c->options.scheduled_exit_interval;
|
||||
+ /* don't reschedule if already scheduled. */
|
||||
+ if (event_timeout_defined(&c->c2.scheduled_exit))
|
||||
+ {
|
||||
+ return false;
|
||||
+ }
|
||||
tls_set_single_session(c->c2.tls_multi);
|
||||
update_time();
|
||||
reset_coarse_timers(c);
|
||||
event_timeout_init(&c->c2.scheduled_exit, n_seconds, now);
|
||||
- c->c2.scheduled_exit_signal = signal;
|
||||
+ c->c2.scheduled_exit_signal = SIGTERM;
|
||||
msg(D_SCHED_EXIT, "Delayed exit in %d seconds", n_seconds);
|
||||
+ return true;
|
||||
}
|
||||
|
||||
/*
|
||||
diff --git a/src/openvpn/forward.h b/src/openvpn/forward.h
|
||||
index 5585366..9dd9e47 100644
|
||||
--- a/src/openvpn/forward.h
|
||||
+++ b/src/openvpn/forward.h
|
||||
@@ -328,7 +328,7 @@ send_control_channel_string_dowork(struct tls_multi *multi,
|
||||
void process_ip_header(struct context *c, unsigned int flags, struct buffer *buf);
|
||||
|
||||
#if P2MP
|
||||
-void schedule_exit(struct context *c, const int n_seconds, const int signal);
|
||||
+bool schedule_exit(struct context *c);
|
||||
|
||||
#endif
|
||||
|
||||
diff --git a/src/openvpn/push.c b/src/openvpn/push.c
|
||||
index bc94c32..b8e7c93 100644
|
||||
--- a/src/openvpn/push.c
|
||||
+++ b/src/openvpn/push.c
|
||||
@@ -266,8 +266,6 @@ send_auth_failed(struct context *c, const char *client_reason)
|
||||
static const char auth_failed[] = "AUTH_FAILED";
|
||||
size_t len;
|
||||
|
||||
- schedule_exit(c, c->options.scheduled_exit_interval, SIGTERM);
|
||||
-
|
||||
len = (client_reason ? strlen(client_reason)+1 : 0) + sizeof(auth_failed);
|
||||
if (len > PUSH_BUNDLE_SIZE)
|
||||
{
|
||||
@@ -317,7 +315,7 @@ send_auth_pending_messages(struct context *c, const char *extra)
|
||||
void
|
||||
send_restart(struct context *c, const char *kill_msg)
|
||||
{
|
||||
- schedule_exit(c, c->options.scheduled_exit_interval, SIGTERM);
|
||||
+ schedule_exit(c);
|
||||
send_control_channel_string(c, kill_msg ? kill_msg : "RESTART", D_PUSH);
|
||||
}
|
||||
|
||||
--
|
||||
2.33.0
|
||||
|
||||
@ -1,12 +1,13 @@
|
||||
Name: openvpn
|
||||
Version: 2.5.5
|
||||
Release: 2
|
||||
Release: 3
|
||||
Summary: A full-featured open source SSL VPN solution
|
||||
License: GPL-2.0-or-later and OpenSSL and SSLeay
|
||||
URL: https://community.openvpn.net/openvpn
|
||||
Source0: https://swupdate.openvpn.org/community/releases/openvpn-%{version}.tar.gz
|
||||
# https://github.com/OpenVPN/openvpn/commit/af3e382
|
||||
Patch0: CVE-2022-0547.patch
|
||||
Patch1: CVE-2024-28882.patch
|
||||
BuildRequires: openssl-devel lz4-devel systemd-devel lzo-devel gcc
|
||||
BuildRequires: iproute pam-devel pkcs11-helper-devel >= 1.11
|
||||
|
||||
@ -123,6 +124,9 @@ fi
|
||||
%{_mandir}/man5/openvpn-examples.5.gz
|
||||
|
||||
%changelog
|
||||
* Tue Jul 09 2024 zhangxianting <zhangxianting@uniontech.com> - 2.5.5-3
|
||||
- Fix CVE-2024-28882
|
||||
|
||||
* Wed Mar 30 2022 wangkai <wangkai385@huawei.com> - 2.5.5-2
|
||||
- Fix CVE-2022-0547
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user