Stack Corruption Vulnerability in X.Org Affects Privileged Systems
CVE-2022-46340

8.8HIGH

Key Information:

Vendor

X.org

Status
Xorg-x11-server
Vendor
CVE Published:
14 December 2022

What is CVE-2022-46340?

A vulnerability in X.Org's XTest extension has been discovered, which can lead to stack corruption when GenericEvents exceeding 32 bytes are sent via the XTestFakeInput request. This flaw poses risks of local privilege escalation on systems where the X server operates with elevated privileges and can also allow remote code execution in SSH sessions utilizing X forwarding. Systems where the client and server share the same byte order remain unaffected by this issue.

Affected Version(s)

xorg-x11-server xorg-x11-server-1.20.4

References

https://access.redhat.com/security/cve/CVE-2022-46340
https://bugzilla.redhat.com/show_bug.cgi?id=2151755
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.