Out-of-bounds Access Issue in Xorg X11 Server by X.Org Foundation
CVE-2021-4009

7.8HIGH

Key Information:

Vendor

X.org

Status
Xorg-x11-server
Vendor
CVE Published:
17 December 2021

What is CVE-2021-4009?

A vulnerability in the Xorg X11 server allows for out-of-bounds access in the SProcXFixesCreatePointerBarrier function. This flaw primarily threatens data confidentiality and integrity, as well as system availability, exposing systems to potential exploitation. Users are advised to update to the latest versions to mitigate risks associated with this vulnerability.

Affected Version(s)

xorg-x11-server xorg-x11-server 21.1.2, xorg-x11-server 1.20.14

References

https://lists.x.org/archives/xorg-announce/2021-December/...
https://lists.x.org/archives/xorg-announce/2021-December/...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.