High severity · published Oct 10, 2017
CVE-2017-13723
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…
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
XS
X Server · X.org
through 1.19.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-13723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-13723
Third Party Advisory
http://www.debian.org/security/2017/dsa-4000
Mailing List
http://www.openwall.com/lists/oss-security/2017/10/04/10
Third Party Advisory
http://www.securityfocus.com/bid/101253
Third Party Advisory
https://cgit.freedesktop.org/xorg/xserver/commit/?id=94f11ca5cf011ef123bd222cabeaef6f424d76ac
lists.debian.org
https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
Vendor Advisory
https://lists.x.org/archives/xorg-announce/2017-October/002808.html
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