X Server
CVE-2022-46343
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could access freed memory to execute arbitrary code or crash the application by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions. Affected products include: X.Org X Server, Fedoraproject Fedora, Debian Debian Linux.
Know when X Server gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.
Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
A flaw was found in xorg-x11-server before 1.20.3. Rated medium severity (CVSS 6.6), this vulnerability is low attack co
"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. Rated high severity (C
A heap overflow vulnerability exists in X.Org Server and Xwayland where improper memory allocation for logical button ma
In the X.Org X server before 2017-06-19, a user authenticated to an X Session could crash or execute code in the context
Use-after-free in the GLX dispatch layer of X.Org X Server and Xwayland allows an authenticated X client to corrupt heap
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability was found in X.Org. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low atta
A vulnerability classified as critical was found in X.org Server. Rated high severity (CVSS 8.8), this vulnerability is
A out-of-bounds write flaw was found in the xorg-x11-server. Rated high severity (CVSS 7.8), this vulnerability is low a
A flaw was found in xorg-server. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Out-o
GitHub PoC
Exploit-DB