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import tigervnc-1.12.0-15.el8_8

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CentOS Sources 2023-05-16 06:07:53 +00:00 committed by Stepan Oksanichenko
parent 145af0d40d
commit 1f98227e4a
4 changed files with 109 additions and 45 deletions
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31
SOURCES/tigervnc-selinux-allow-vncsession-create-vnc-directory.patch Normal file
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@ -0,0 +1,31 @@
From 717d787de8f913070446444e37d552b51f05515e Mon Sep 17 00:00:00 2001
From: Zdenek Pytela <zpytela@redhat.com>
Date: Mon, 16 Jan 2023 12:35:40 +0100
Subject: [PATCH] SELinux: Allow vncsession create ~/.vnc directory
Addresses the following AVC denial:
type=PROCTITLE msg=audit(01/12/2023 02:58:12.648:696) : proctitle=/usr/sbin/vncsession fedora :1
type=PATH msg=audit(01/12/2023 02:58:12.648:696) : item=1 name=/home/fedora/.vnc nametype=CREATE cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=PATH msg=audit(01/12/2023 02:58:12.648:696) : item=0 name=/home/fedora/ inode=262145 dev=fc:02 mode=dir,700 ouid=fedora ogid=fedora rdev=00:00 obj=unconfined_u:object_r:user_home_dir_t:s0 nametype=PARENT cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(01/12/2023 02:58:12.648:696) : cwd=/home/fedora
type=SYSCALL msg=audit(01/12/2023 02:58:12.648:696) : arch=x86_64 syscall=mkdir success=no exit=EACCES(Permission denied) a0=0x7fff47d52540 a1=0755 a2=0x0 a3=0x0 items=2 ppid=2869 pid=2880 auid=fedora uid=fedora gid=fedora euid=fedora suid=fedora fsuid=fedora egid=fedora sgid=fedora fsgid=fedora tty=(none) ses=8 comm=vncsession exe=/usr/sbin/vncsession subj=system_u:system_r:vnc_session_t:s0 key=(null)
type=AVC msg=audit(01/12/2023 02:58:12.648:696) : avc: denied { create } for pid=2880 comm=vncsession name=.vnc scontext=system_u:system_r:vnc_session_t:s0 tcontext=system_u:object_r:vnc_home_t:s0 tclass=dir permissive=0
Resolves: rhbz#2143704
---
unix/vncserver/selinux/vncsession.te | 1 +
1 file changed, 1 insertion(+)
diff --git a/unix/vncserver/selinux/vncsession.te b/unix/vncserver/selinux/vncsession.te
index fb966c14b..680be8ea1 100644
--- a/unix/vncserver/selinux/vncsession.te
+++ b/unix/vncserver/selinux/vncsession.te
@@ -37,6 +37,7 @@ allow vnc_session_t self:fifo_file rw_fifo_file_perms;
allow vnc_session_t vnc_session_var_run_t:file manage_file_perms;
files_pid_filetrans(vnc_session_t, vnc_session_var_run_t, file)
+create_dirs_pattern(vnc_session_t, vnc_home_t, vnc_home_t)
manage_files_pattern(vnc_session_t, vnc_home_t, vnc_home_t)
manage_fifo_files_pattern(vnc_session_t, vnc_home_t, vnc_home_t)
manage_sock_files_pattern(vnc_session_t, vnc_home_t, vnc_home_t)

35
SOURCES/xorg-x11-server-Xi-fix-potential-use-after-free-in-DeepCopyPointerCl.patch
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@ -1,35 +0,0 @@
From 7150ba655c0cc08fa6ded309b81265bb672f2869 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Wed, 25 Jan 2023 11:41:40 +1000
Subject: [PATCH xserver] Xi: fix potential use-after-free in
DeepCopyPointerClasses
CVE-2023-0494, ZDI-CAN 19596
This vulnerability was discovered by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
Xi/exevents.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/Xi/exevents.c b/Xi/exevents.c
index 217baa9561..dcd4efb3bc 100644
--- a/Xi/exevents.c
+++ b/Xi/exevents.c
@@ -619,8 +619,10 @@ DeepCopyPointerClasses(DeviceIntPtr from, DeviceIntPtr to)
memcpy(to->button->xkb_acts, from->button->xkb_acts,
sizeof(XkbAction));
}
- else
+ else {
free(to->button->xkb_acts);
+ to->button->xkb_acts = NULL;
+ }
memcpy(to->button->labels, from->button->labels,
from->button->numButtons * sizeof(Atom));
--
2.39.0

42
SOURCES/xorg-x11-server-composite-Fix-use-after-free-of-the-COW.patch Normal file
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@ -0,0 +1,42 @@
From 947bd1b3f4a23565bf10879ec41ba06ebe1e1c76 Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Mon, 13 Mar 2023 11:08:47 +0100
Subject: [PATCH xserver] composite: Fix use-after-free of the COW
ZDI-CAN-19866/CVE-2023-1393
If a client explicitly destroys the compositor overlay window (aka COW),
we would leave a dangling pointer to that window in the CompScreen
structure, which will trigger a use-after-free later.
Make sure to clear the CompScreen pointer to the COW when the latter gets
destroyed explicitly by the client.
This vulnerability was discovered by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
---
composite/compwindow.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/composite/compwindow.c b/composite/compwindow.c
index 4e2494b86..b30da589e 100644
--- a/composite/compwindow.c
+++ b/composite/compwindow.c
@@ -620,6 +620,11 @@ compDestroyWindow(WindowPtr pWin)
ret = (*pScreen->DestroyWindow) (pWin);
cs->DestroyWindow = pScreen->DestroyWindow;
pScreen->DestroyWindow = compDestroyWindow;
+
+ /* Did we just destroy the overlay window? */
+ if (pWin == cs->pOverlayWin)
+ cs->pOverlayWin = NULL;
+
/* compCheckTree (pWin->drawable.pScreen); can't check -- tree isn't good*/
return ret;
}
--
2.40.0

46
SPECS/tigervnc.spec
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@ -5,7 +5,7 @@
Name: tigervnc
Version: 1.12.0
Release: 9%{?dist}.2
Release: 15%{?dist}
Summary: A TigerVNC remote display system
%global _hardened_build 1
@ -33,14 +33,15 @@ Patch54: tigervnc-fix-ghost-cursor-in-zaphod-mode.patch
# https://github.com/TigerVNC/tigervnc/pull/1510
Patch55: tigervnc-add-new-keycodes-for-unknown-keysyms.patch
Patch56: tigervnc-sanity-check-when-cleaning-up-keymap-changes.patch
Patch57: tigervnc-selinux-allow-vncsession-create-vnc-directory.patch
# This is tigervnc-%%{version}/unix/xserver116.patch rebased on the latest xorg
Patch100: tigervnc-xserver120.patch
# 1326867 - [RHEL7.3] GLX applications in an Xvnc session fails to start
Patch101: 0001-rpath-hack.patch
# CVE-2023-0494 tigervnc: xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation
Patch110: xorg-x11-server-Xi-fix-potential-use-after-free-in-DeepCopyPointerCl.patch
# CVE-2023-1393 tigervnc: xorg-x11-server: X.Org Server Overlay Window Use-After-Free Local Privilege Escalation Vulnerability
Patch110: xorg-x11-server-composite-Fix-use-after-free-of-the-COW.patch
BuildRequires: gcc-c++
BuildRequires: libX11-devel, automake, autoconf, libtool, gettext, gettext-autopoint
@ -163,7 +164,7 @@ for all in `find . -type f -perm -001`; do
done
%patch100 -p1 -b .xserver120-rebased
%patch101 -p1 -b .rpath
%patch110 -p1 -b .Xi-fix-potential-use-after-free-in-DeepCopyPointerCl.patch
%patch110 -p1 -b .composite-Fix-use-after-free-of-the-COW
popd
%patch1 -p1 -b .use-gnome-as-default-session
@ -176,6 +177,7 @@ popd
%patch54 -p1 -b .fix-ghost-cursor-in-zaphod-mode
%patch55 -p1 -b .add-new-keycodes-for-unknown-keysyms
%patch56 -p1 -b .sanity-check-when-cleaning-up-keymap-changes
%patch57 -p1 -b .selinux-allow-vncsession-create-vnc-directory
%build
%ifarch sparcv9 sparc64 s390 s390x
@ -330,17 +332,41 @@ fi
%ghost %verify(not md5 size mtime) %{_sharedstatedir}/selinux/%{selinuxtype}/active/modules/200/%{modulename}
%changelog
* Wed Feb 15 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-9.2
*Mon Mar 27 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-15
- xorg-x11-server: X.Org Server Overlay Window Use-After-Free Local Privilege Escalation Vulnerability
Resolves: bz#2180305
* Tue Feb 21 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-14
- SELinux: allow vncsession create .vnc directory
Resolves: bz#2164704
* Wed Feb 15 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-13
- Add sanity check when cleaning up keymap changes
Resolves: bz#2169962
Resolves: bz#2169960
* Mon Feb 06 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-9.1
* Mon Feb 06 2023 Jan Grulich <jgrulich@redhat.com> - 1.12.0-12
- xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation
Resolves: bz#2167057
Resolves: bz#2167058
* Tue Dec 06 2022 Jan Grulich <jgrulich@redhat.com> - 1.12.0-8
* Tue Dec 20 2022 Tomas Popela <tpopela@redhat.com> - 1.12.0-11
- Rebuild for xorg-x11-server CVE-2022-46340 follow up fix
* Fri Dec 16 2022 Jan Grulich <jgrulich@redhat.com> - 1.12.0-10
- Rebuild for xorg-x11-server CVEs
Resolves: CVE-2022-4283 (bz#2154233)
Resolves: CVE-2022-46340 (bz#2154220)
Resolves: CVE-2022-46341 (bz#2154223)
Resolves: CVE-2022-46342 (bz#2154225)
Resolves: CVE-2022-46343 (bz#2154227)
Resolves: CVE-2022-46344 (bz#2154229)
* Thu Dec 08 2022 Jan Grulich <jgrulich@redhat.com> - 1.12.0-9
- Bump build version to fix upgrade path
Resolves: bz#1437569
* Fri Nov 18 2022 Jan Grulich <jgrulich@redhat.com> - 1.12.0-8
- x0vncserver: add new keysym in case we don't find matching keycode
Resolves: bz#2150915
Resolves: bz#1437569
* Wed Aug 24 2022 Jan Grulich <jgrulich@redhat.com> - 1.12.0-7
- x0vncserver: fix ghost cursor in zaphod mode (better version)