CVE-2022-46340

Description

A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. 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. This issue does not affect systems where client and server use the same byte order.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 1.01% Top 25%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a xorg-x11-server
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2022-46340 third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2151755 third party advisory issue tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DXDF2O5PPLE3SVAJJYUOSAD5QZ4TWQ2G/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NELB7YDWRABYYBG4UPTHRBDTKJRV5M2/ vendor advisory mailing list third party advisory
https://www.debian.org/security/2022/dsa-5304 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWTH3SNJ3GKYDSN7I3QDGWYEPSMWU6EP/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z67QC4C3I2FI2WRFIUPEHKC36J362MLA/ vendor advisory mailing list third party advisory
https://security.gentoo.org/glsa/202305-30

Frequently Asked Questions

What is the severity of CVE-2022-46340?
CVE-2022-46340 has been scored as a high severity vulnerability.
How to fix CVE-2022-46340?
To fix CVE-2022-46340, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-46340 being actively exploited in the wild?
It is possible that CVE-2022-46340 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-46340?
CVE-2022-46340 affects n/a xorg-x11-server.
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