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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 these values an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself possibly causing the client to crash with this memory corruption.
| Reporter | Title | Published | Views | Family All 150 |
|---|---|---|---|---|
 | Security Bulletin: IBM Maximo Application Suite uses multiple packages which are vulnerable to multiple CVEs | 8 Oct 202408:35 | – | ibm |
 | libX11 -- Sub-object overflows | 15 Jun 202300:00 | – | freebsd |
 | CVE-2023-3138 | 28 Jun 202321:15 | – | attackerkb |
 | Amazon Linux 2023 : libX11, libX11-common, libX11-devel (ALAS2023-2023-250) | 20 Jul 202300:00 | – | nessus |
| Amazon Linux 2 : libX11 (ALAS-2023-2129) | 20 Jul 202300:00 | – | nessus |
| Amazon Linux AMI : libX11 (ALAS-2023-1782) | 20 Jul 202300:00 | – | nessus |
| Alibaba Cloud Linux 3 : 0058: libX11 (ALINUX3-SA-2024:0058) | 14 May 202500:00 | – | nessus |
| CentOS 8 : libX11 (CESA-2023:7029) | 14 Nov 202300:00 | – | nessus |
| CentOS 9 : libX11-1.7.0-8.el9 | 29 Feb 202400:00 | – | nessus |
| Debian dla-3472 : libx11-6 - security update | 26 Jun 202300:00 | – | nessus |
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29 Jun 2023 07:00Current
7High risk
Vulners AI Score7
CVSS 3.17.5
EPSS0.00087