Fedora 33 : x11vnc (2021-93911302d6)

high Nessus Plugin ID 147618
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 33 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-93911302d6 advisory.

- scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which allows access by actors other than the current user. (CVE-2020-29074)

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

Solution

Update the affected x11vnc package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2021-93911302d6

Plugin Details

Severity: High

ID: 147618

File Name: fedora_2021-93911302d6.nasl

Version: 1.3

Type: local

Agent: unix

Published: 3/10/2021

Updated: 4/12/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-29074

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:33, p-cpe:/a:fedoraproject:fedora:x11vnc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/1/2021

Vulnerability Publication Date: 11/25/2020

Reference Information

CVE: CVE-2020-29074