Detections
Analytics

Oracle Linux 7 : tigervnc (ELSA-2023-7428)

high Nessus Plugin ID 186185

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-7428 advisory.

 - A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service. (CVE-2023-5367)

 - A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. (CVE-2023-5380)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2023-7428.html

Plugin Details

Severity: High

ID: 186185

File Name: oraclelinux_ELSA-2023-7428.nasl

Version: 1.0

Type: local

Agent: unix

Published: 11/22/2023

Updated: 11/22/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-5367

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:7, cpe:/a:oracle:linux:7::optional_latest, p-cpe:/a:oracle:linux:tigervnc-icons, p-cpe:/a:oracle:linux:tigervnc-server, p-cpe:/a:oracle:linux:tigervnc-license, p-cpe:/a:oracle:linux:tigervnc, p-cpe:/a:oracle:linux:tigervnc-server-minimal, cpe:/a:oracle:linux:7:9:patch, cpe:/a:oracle:linux:7::latest, p-cpe:/a:oracle:linux:tigervnc-server-applet, p-cpe:/a:oracle:linux:tigervnc-server-module

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 11/22/2023

Vulnerability Publication Date: 10/25/2023

Reference Information

CVE: CVE-2023-5367, CVE-2023-5380