Out-of-Bounds Access in Xorg X11 Server Affects Data Integrity
CVE-2021-4011

7.8HIGH

Key Information:

Vendor

X.org

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

What is CVE-2021-4011?

A flaw has been identified in the Xorg X11 Server, specifically in versions prior to 21.1.2 and 1.20.14, which allows for out-of-bounds access in the SwapCreateRegister function. This vulnerability poses significant risks to data confidentiality and integrity, as well as impacting the overall availability of affected systems. Users are encouraged to upgrade to the latest versions to safeguard against potential exploitation.

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

.