CVE-2023-3138 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Libx11
Severity
7.5HIGHNVD
EPSS
0.1%
top 76.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJun 28
Latest updateMar 4
Description
A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for the…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages3 packages
Also affects: Enterprise Linux 8.0, 9.0
Patches
🔴Vulnerability Details
3💥Exploits & PoCs
1Nuclei▶
Payment Gateway for Telcell < 2.0.4 - Open Redirect
📋Vendor Advisories
7Red Hat▶
libX11: InitExt.c can overwrite unintended portions of the Display structure if the extension request leads to a buffer overflow↗2023-06-15