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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:218650
[Eng]
Version
1
Class
patch
ALTXid
442317
Language
Russian
Severity
Medium
Title
MGASA-2023-0206 -- обновление безопасности для libx11
Description
Buffer overflows in InitExt.c in libX11 prior to 1.8.6. (CVE-2023-3138)
Family
unix
Platform
Mageia 8
Product
libx11
Reference
VENDOR: MGASA-2023-0206
VENDOR: MGASA-2023-0206
Id:
MGASA-2023-0206
Reference:
https://advisories.mageia.org/MGASA-2023-0206.html
CVE: CVE-2023-3138
CVE: CVE-2023-3138
Id:
CVE-2023-3138
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3138
Comment
: 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.
CVSSv3 Score:
7.5
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/304a654a0d57bf0f00d8998185f0360332cfa36c (MISC)
https://lists.x.org/archives/xorg-announce/2023-June/003406.html (MISC)
https://access.redhat.com/security/cve/CVE-2023-3138 (MISC)
https://lists.x.org/archives/xorg-announce/2023-June/003407.html (MISC)
https://security.netapp.com/advisory/ntap-20231208-0008/ ()
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