High severity · published Mar 27, 2023
CVE-2023-0494
A vulnerability was found in X.Org
7.8
CVSS
0.9%
EPSS
No
On KEV
Description
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
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)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
8.0; 8.1; 9.0 · source: NVD
EL
Enterprise Linux Aus · Redhat
8.4; 8.6 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Eus · Redhat
8.4; 8.6; 9.0 · source: NVD
EL
Enterprise Linux For Ibm Z Systems · Redhat
7.0; 8.0 · source: NVD
EL
Enterprise Linux For Ibm Z Systems Eus · Redhat
8.4; 8.6 · source: NVD
EL
Enterprise Linux For Power Big Endian · Redhat
7.0 · source: NVD
EL
Enterprise Linux For Power Little Endian · Redhat
7.0; 8.0; 9.0 · source: NVD
EL
Enterprise Linux For Power Little Endian Eus · Redhat
8.4; 8.6 · source: NVD
EL
Enterprise Linux For Scientific Computing · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
8.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-0494
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-0494
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2165995
Patch
https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec
Mailing List
https://lists.x.org/archives/xorg-announce/2023-February/003320.html
security.gentoo.org
https://security.gentoo.org/glsa/202305-30
More from Fedora
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2024-4577
Argument Injection in PHP-CGI
9.8
CVE-2021-44026
Roundcube Webmail SQL Injection Vulnerability
9.8
CVE-2021-42013
Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)