CVE-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 aborts of the X server or replace shared
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 29.1% of scored records. A rank, not a probability.
- NVD base score
- 4.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-10-09 14:00Z9 YR AGO
- Last updated
- 2024-08-05 19:05Z2 YR AGO
- Reserved
- 2017-08-28
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 851ab26ff5bc9b42b58fa9d83eea0530263eb5cb07eab1de5220e09c03c16b64
05 Affected products
06 References
- cgit.freedesktop.orghttps://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1
- security.gentoo.orgGLSA-201710-30https://security.gentoo.org/glsa/201710-30
- www.openwall.com[oss-security] 20171004 Fwd: X server fixes for CVE-2017-13721 & CVE-2017-13723http://www.openwall.com/lists/oss-security/2017/10/04/10
- www.securityfocus.com101238http://www.securityfocus.com/bid/101238
- www.debian.orgDSA-4000http://www.debian.org/security/2017/dsa-4000
- lists.x.org[xorg-announce] 20171004 [ANNOUNCE] xorg-server 1.19.4https://lists.x.org/archives/xorg-announce/2017-October/002808.html
07 Fixed in
Arch Linux
- xorg-server Fixed in 1.19.4-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- xorg-server Fixed in 2:1.19.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- xorg-server Fixed in 2:1.19.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- xorg-server Fixed in 2:1.19.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- xorg-server Fixed in 2:1.15.1-0ubuntu2.10
- xorg-server-lts-xenial Fixed in 2:1.18.3-1ubuntu2.3~trusty3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- xorg-server Fixed in 2:1.18.4-0ubuntu0.6
- xorg-server-hwe-16.04 Fixed in 2:1.19.3-1ubuntu1~16.04.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.