Bug 44973 - xorg-server: Multiple issues (4.2)
xorg-server: Multiple issues (4.2)
Status: CLOSED FIXED
Product: UCS
Classification: Unclassified
Component: Security updates
UCS 4.2
Other Linux
: P5 normal (vote)
: UCS 4.2-3-errata
Assigned To: Philipp Hahn
Arvid Requate
:
Depends on:
Blocks: 37755
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Reported: 2017-07-11 16:33 CEST by Arvid Requate
Modified: 2018-05-09 14:46 CEST (History)
0 users

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What kind of report is it?: Security Issue
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Max CVSS v3 score: 7 (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
requate: Patch_Available+


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Description Arvid Requate univentionstaff 2017-07-11 16:33:47 CEST
Upstream Debian package version 2:1.16.4-1+deb8u1 fixes:

* In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context of the X Server by exploiting a stack overflow in the endianness conversion of X Events. (CVE-2017-10971)

* Uninitialized data in endianness conversion in the XEvent handling of the X.Org X Server before 2017-06-19 allowed authenticated malicious users to access potentially privileged data from the X server. (CVE-2017-10972)
Comment 1 Arvid Requate univentionstaff 2017-10-30 19:48:20 CET
Upstream Debian package version 2:1.16.4-1+deb8u2 fixes:

* Unvalidated extra length in ProcEstablishConnection (CVE-2017-12176)
* dbe: Unvalidated variable-length request in ProcDbeGetVisualInfo (CVE-2017-12177)
* Xi: fix wrong extra length check in ProcXIChangeHierarchy (CVE-2017-12178)
* Xi: integer overflow and unvalidated length in (S)ProcXIBarrierReleasePointer (CVE-2017-12179)
* hw/xfree86: unvalidated lengths (CVE-2017-12180)
* hw/xfree86: unvalidated lengths (CVE-2017-12181)
* hw/xfree86: unvalidated lengths (CVE-2017-12182)
* xfixes: unvalidated lengths (CVE-2017-12183)
* Unvalidated lengths (CVE-2017-12184 CVE-2017-12185 CVE-2017-12186 CVE-2017-12187)
* In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session. (CVE-2017-13721)
* In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp. (CVE-2017-13723)
Comment 2 Philipp Hahn univentionstaff 2018-01-25 10:59:57 CET
Mass-import from Debian-Security:
  python -m univention.repong.^Cbmirror -s jessie -r 4.2-3 --override=$HOME/REPOS/repo-ng/mirror/update_ucs42_mirror_from_debian.yml --errata=doc/errata --sql --process=ALL -vvvv --now=201801211553

YAML: git:bd6159834a..449aa5a7cf
Comment 3 Quality Assurance univentionstaff 2018-05-04 16:56:52 CEST
--- mirror/ftp/4.2/unmaintained/4.2-0/source/xorg-server_1.16.4-1.dsc
+++ apt/ucs_4.2-0-errata4.2-3/source/xorg-server_1.16.4-1+deb8u2.dsc
@@ -1,3 +1,33 @@
+2:1.16.4-1+deb8u2 [Sat, 14 Oct 2017 12:35:36 +0200] Julien Cristau <jcristau@debian.org>:
+
+  * render: Fix out of boundary heap access
+  * Xext/shm: Validate shmseg resource id (CVE-2017-13721)
+  * xkb: Escape non-printable characters correctly.
+  * xkb: Handle xkb formated string output safely (CVE-2017-13723)
+  * os: Make sure big requests have sufficient length.
+  * Unvalidated lengths in
+    - XFree86-VidModeExtension (CVE-2017-12180)
+    - XFree86-DGA (CVE-2017-12181)
+    - XFree86-DRI (CVE-2017-12182)
+    - XFIXES (CVE-2017-12183)
+    - XINERAMA (CVE-2017-12184)
+    - MIT-SCREEN-SAVER (CVE-2017-12185)
+    - X-Resource (CVE-2017-12186)
+    - RENDER (CVE-2017-12187)
+  * Xi: Test exact size of XIBarrierReleasePointer
+  * Xi: integer overflow and unvalidated length in
+    (S)ProcXIBarrierReleasePointer (CVE-2017-12179)
+  * Xi: Silence some tautological warnings
+  * Xi: fix wrong extra length check in ProcXIChangeHierarchy (CVE-2017-12178)
+  * dbe: Unvalidated variable-length request in ProcDbeGetVisualInfo (CVE-2017-12177)
+  * Unvalidated extra length in ProcEstablishConnection (CVE-2017-12176)
+  * Use timingsafe_memcmp() to compare MIT-MAGIC-COOKIES (CVE-2017-2624)
+  * Xwayland: enable access control and default to just the local user (CVE-2015-3164)
+
+2:1.16.4-1+deb8u1 [Thu, 06 Jul 2017 22:34:31 +0200] Moritz Mühlenhoff <jmm@debian.org>:
+
+  * CVE-2017-10971 CVE-2017-10972
+
 2:1.16.4-1 [Wed, 11 Feb 2015 01:26:07 +0100] Julien Cristau <jcristau@debian.org>:
 
   * New upstream release
Comment 4 Arvid Requate univentionstaff 2018-05-07 20:54:26 CEST
* No UCS specific patches
* Comparison to previously shipped version ok
* Binary package update Ok
* Advisory adjusted:
  95ac67164e | Sort CVEs
Comment 5 Arvid Requate univentionstaff 2018-05-09 14:46:41 CEST
<http://errata.software-univention.de/ucs/4.2/418.html>