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FreeBSD : x11vnc -- access to shared memory segments (305ceb2c-9df8-11ef-a660-d85ed309193e)

high Nessus Plugin ID 210721

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Synopsis

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

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 305ceb2c-9df8-11ef-a660-d85ed309193e advisory.

 [email protected] reports:
 scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which allows access by actors other than the current user.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

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 packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2020-29074

http://www.nessus.org/u?89e25c43

Plugin Details

Severity: High

ID: 210721

File Name: freebsd_pkg_305ceb2c9df811efa660d85ed309193e.nasl

Version: 1.1

Type: local

Published: 11/9/2024

Updated: 11/9/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2020-29074

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:x11vnc, 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: 11/8/2024

Vulnerability Publication Date: 11/25/2020

Reference Information

CVE: CVE-2020-29074