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CVE-2023-6377

HIGHCVSS 7.8/10EPSS 1.59%

Last modified

CVE-2023-6377 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. EPSS estimates a 1.59% chance of exploitation in the next 30 days.

Description

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.59%

72.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatEnterprise Linux Eus9.2
DebianDebian Linux10.0
DebianDebian Linux11.0
DebianDebian Linux12.0
X.OrgX Server< 21.1.10
X.OrgXwayland< 23.2.3
TigervncTigervncAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-6377?
A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.
How severe is CVE-2023-6377?
CVE-2023-6377 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.
How do I fix CVE-2023-6377?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-6377?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST