X Server Unauthenticated Access: Screenshot

critical Nessus Plugin ID 66349
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Synopsis

The remote X server accepts TCP connections.

Description

The remote X server accepts remote TCP connections. It is possible for an attacker to grab a screenshot of the remote host.

Solution

Restrict access to this port by using the 'xhost' command. If the X client/server facility is not used, disable TCP connections to the X server entirely.

Plugin Details

Severity: Critical

ID: 66349

File Name: xserver_screenshot.nbin

Version: 1.54

Type: remote

Family: Misc.

Published: 5/8/2013

Updated: 7/12/2021

Dependencies: X.nasl, os_fingerprint.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

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

Vulnerability Information

CPE: cpe:/a:x.org:x11:7.1_1.1.0

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 1/1/1990

Exploitable With

Metasploit (X11 No-Auth Scanner)

Reference Information

CVE: CVE-1999-0526

CERT: 704969