CVE-2023-3138
CVSS 3.1 Score 7.5 of 10 (high)
Details
Published Jun 28, 2023
Updated: Dec 8, 2023
CWE ID 119
CWE ID 787
Summary
CVE-2023-3138 is a vulnerability affecting libX11, where functions in src/InitExt.c fail to validate Request, Event, or Error IDs, allowing them to be used as array indexes. Malicious servers or proxies can exploit this by providing out-of-bounds IDs, resulting in memory corruption and potentially causing client crashes. Despite the protocol specifying a single byte for these IDs, the data cannot be written outside the Display structure's bounds, limiting the attack surface.
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Affected Products
- X.org Libx11
- Libx11
- Red Hat Enterprise Linux
Affected Vendors
- Red Hat
- X.Org Foundation
- X.Org
Advisories, Assessments, and Mitigations
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