CVE-2017-13721
published 2017-10-10CVE-2017-13721: 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…
PriorityP417medium4.7CVSS 3.0
AVLACHPRLUINSUCNINAH
EPSS
0.36%
28.2th percentile
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | xorg-server | < xorg-server 2:1.19.4-1 (bookworm) | xorg-server 2:1.19.4-1 (bookworm) |
| x.org | x_server | <= 1.19.3 | — |
| x.org | xorg-server | >= 0 < 2:1.19.4-1 | 2:1.19.4-1 |
| x.org | xorg-server | >= 0 < 2:1.19.4-1 | 2:1.19.4-1 |
| x.org | xorg-server | >= 0 < 2:1.19.4-1 | 2:1.19.4-1 |
| x.org | xorg-server | >= 0 < 2:1.19.4-1 | 2:1.19.4-1 |
| x.org | xorg-server | >= 0 < 2:1.15.1-0ubuntu2.10 | 2:1.15.1-0ubuntu2.10 |
| x.org | xorg-server | >= 0 < 2:1.18.4-0ubuntu0.6 | 2:1.18.4-0ubuntu0.6 |
CVSS provenance
nvdv3.04.7MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:N/I:N/A:P
osv4.7MEDIUM
vendor_debian4.7MEDIUM
vendor_redhat4.7MEDIUM
vendor_ubuntu4.7MEDIUM
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Ubuntu
X.Org X server vulnerabilities
vendor_ubuntu·2017-10-12·CVSS 4.7
CVE-2017-13721 [MEDIUM] X.Org X server vulnerabilities
Title: X.Org X server vulnerabilities
Summary: Several security issues were fixed in the X.Org X server.
Michal Srb discovered that the X.Org X server incorrectly handled shared
memory segments. An attacker able to connect to an X server, either locally
or remotely, could use this issue to crash the server, or possibly replace
shared memory segments of other X clients in the same session.
(CVE-2017-13721)
Michal Srb discovered that the X.Org X server incorrectly handled XKB
buffers. An attacker able to connect to an X server, either locally or
remotely, could use this issue to crash the server, or possibly execute
arbitrary code. (CVE-2017-13723)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Red Hat
xorg-x11-server: Insufficient validation of shmseg resource id
vendor_redhat·2017-10-04·CVSS 4.7
CVE-2017-13721 [MEDIUM] CWE-20 xorg-x11-server: Insufficient validation of shmseg resource id
xorg-x11-server: Insufficient validation of shmseg resource id
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.
Package: xorg-x11-server (Red Hat Enterprise Linux 5) - Will not fix
Package: xorg-x11-server (Red Hat Enterprise Linux 6) - Will not fix
Package: xorg-x11-server (Red Hat Enterprise Linux 7) - Will not fix
Package: xorg-x11-server (Red Hat Enterprise Linux 9) - Not affected
Debian
CVE-2017-13721: xorg-server - In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authent...
vendor_debian·2017·CVSS 4.7
CVE-2017-13721 [MEDIUM] CVE-2017-13721: xorg-server - In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authent...
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.
Scope: local
bookworm: resolved (fixed in 2:1.19.4-1)
bullseye: resolved (fixed in 2:1.19.4-1)
forky: resolved (fixed in 2:1.19.4-1)
sid: resolved (fixed in 2:1.19.4-1)
trixie: resolved (fixed in 2:1.19.4-1)
GHSA
GHSA-p2j5-8c6q-m7cw: In X
ghsa_unreviewed·2022-05-13
CVE-2017-13721 [MEDIUM] CWE-269 GHSA-p2j5-8c6q-m7cw: In X
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.
OSV
xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities
osv·2017-10-12·CVSS 4.7
CVE-2017-13721 [MEDIUM] xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities
xorg-server, xorg-server-hwe-16.04, xorg-server-lts-xenial vulnerabilities
Michal Srb discovered that the X.Org X server incorrectly handled shared
memory segments. An attacker able to connect to an X server, either locally
or remotely, could use this issue to crash the server, or possibly replace
shared memory segments of other X clients in the same session.
(CVE-2017-13721)
Michal Srb discovered that the X.Org X server incorrectly handled XKB
buffers. An attacker able to connect to an X server, either locally or
remotely, could use this issue to crash the server, or possibly execute
arbitrary code. (CVE-2017-13723)
OSV
CVE-2017-13721: In X
osv·2017-10-10·CVSS 4.7
CVE-2017-13721 [MEDIUM] CVE-2017-13721: In X
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-13721 xorg-x11-server: Insufficient validation of shmseg resource id
bugzilla·2017-10-10·CVSS 4.7
CVE-2017-13721 [MEDIUM] CVE-2017-13721 xorg-x11-server: Insufficient validation of shmseg resource id
CVE-2017-13721 xorg-x11-server: Insufficient validation of shmseg resource id
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.
References:
http://www.openwall.com/lists/oss-security/2017/10/04/10
https://lists.x.org/archives/xorg-announce/2017-October/002808.html
Upstream patch:
https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1
Discussion:
Created xorg-x11-server tracking bugs for this issue:
Affects: fedora-all [bug 1500389]
Bugzilla
CVE-2017-13721 CVE-2017-13723 xorg-x11-server: various flaws [fedora-all]
bugzilla·2017-10-10·CVSS 4.7
CVE-2017-13721 [MEDIUM] CVE-2017-13721 CVE-2017-13723 xorg-x11-server: various flaws [fedora-all]
CVE-2017-13721 CVE-2017-13723 xorg-x11-server: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of
http://www.debian.org/security/2017/dsa-4000http://www.openwall.com/lists/oss-security/2017/10/04/10http://www.securityfocus.com/bid/101238https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlhttps://security.gentoo.org/glsa/201710-30http://www.debian.org/security/2017/dsa-4000http://www.openwall.com/lists/oss-security/2017/10/04/10http://www.securityfocus.com/bid/101238https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlhttps://security.gentoo.org/glsa/201710-30
2017-10-10
Published