Heap Buffer Overflow Flaw in X.Org Server Could Lead to Application Crash or Remote Code Execution
CVE-2024-21886

7.8HIGH

Key Information:

Status
Red Hat Enterprise Linux 6 Extended Lifecycle Support - Extension
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
28 February 2024

What is CVE-2024-21886?

A vulnerability exists in the X.Org server's DisableDevice function that can cause a heap buffer overflow. This flaw may result in unexpected application crashes and potentially allow an attacker to execute remote code when SSH X11 forwarding is used, thereby compromising the security of affected systems.

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References

https://access.redhat.com/errata/RHSA-2024:0320
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https://access.redhat.com/errata/RHSA-2024:0557
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0558
vendor-advisoryx_refsource_REDHAT

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

Credit

Red Hat would like to thank Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.
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