FreeBSD : xorg-server -- Multiple input validation failures in X server XKB extension (76c8b690-340b-11eb-a2b7-54e1ad3d6335)

high Nessus Plugin ID 143437

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The X.org project reports :

These issues can lead to privileges elevations for authorized clients on systems where the X server is running privileged.

Insufficient checks on the lengths of the XkbSetMap request can lead to out of bounds memory accesses in the X server.

Insufficient checks on input of the XkbSetDeviceInfo request can lead to a buffer overflow on the head in the X server.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 143437

File Name: freebsd_pkg_76c8b690340b11eba2b754e1ad3d6335.nasl

Version: 1.5

Type: local

Family: FreeBSD Local Security Checks

Published: 12/2/2020

Updated: 2/7/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C

CVSS Score Source: CVE-2020-14360

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2020-25712

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:xephyr, p-cpe:/a:freebsd:freebsd:xorg-dmx, p-cpe:/a:freebsd:freebsd:xorg-nestserver, p-cpe:/a:freebsd:freebsd:xorg-server, p-cpe:/a:freebsd:freebsd:xorg-vfbserver, p-cpe:/a:freebsd:freebsd:xwayland, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 12/1/2020

Vulnerability Publication Date: 12/1/2020

Reference Information

CVE: CVE-2020-14360, CVE-2020-25712

Detections

Analytics