High severity · published Oct 16, 2019
CVE-2019-17624
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap
7.8
CVSS
3.7%
EPSS
No
On KEV
Description
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. Note: It is disputed if the X.Org X Server is involved or if there is a stack overflow.
CVSS vector
CVSS:3.1/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)3.7% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XS
X Server · X.org
through 1.20.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-17624
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-17624
Third Party Advisory
http://packetstormsecurity.com/files/154868/X.Org-X-Server-1.20.4-Local-Stack-Overflow.html
Exploit
https://www.exploit-db.com/exploits/47507
Release Notes
https://www.x.org/releases/individual/xserver/
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