Cisco TelePresence Video Communication Server Bash Remote Code Execution (Shellshock)

critical Nessus Plugin ID 78596
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Synopsis

The version of Cisco TelePresence Video Communication Server installed on the remote host is affected by a command injection vulnerability.

Description

According to its self-reported version number, the version of Cisco TelePresence Video Communication Server is affected by a command injection vulnerability known as Shellshock in its included GNU Bash shell. The vulnerability is due to the processing of trailing strings after function definitions in the values of environment variables.
This allows a remote attacker to execute arbitrary code via environment variable manipulation depending on the configuration of the system. The API over HTTP(S) and/or SSH can therefore be exploited.

An attacker must be authenticated before the system is exposed to this exploit.

Solution

Upgrade to version 7.2.4 / 8.1.2 / 8.2.2 / 8.5 or later.

See Also

http://seclists.org/oss-sec/2014/q3/650

https://www.invisiblethreat.ca/post/shellshock/

https://tools.cisco.com/bugsearch/bug/CSCur01461

http://www.nessus.org/u?df19d2c1

Plugin Details

Severity: Critical

ID: 78596

File Name: cisco_telepresence_vcs_CSCur01461.nasl

Version: 1.15

Type: remote

Family: CISCO

Published: 10/21/2014

Updated: 9/9/2021

Dependencies: cisco_telepresence_video_communication_server_detect.nbin

Risk Information

CVSS Score Source: CVE-2014-7187

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

Vulnerability Information

CPE: cpe:/a:cisco:telepresence_video_communication_server_software, cpe:/a:cisco:telepresence_video_communication_server, cpe:/h:cisco:telepresence_video_communication_server

Required KB Items: Cisco/TelePresence_VCS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/17/2014

Vulnerability Publication Date: 9/24/2014

Exploitable With

Core Impact

Metasploit (CUPS Filter Bash Environment Variable Code Injection (Shellshock))

Reference Information

CVE: CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187

BID: 70103, 70137, 70152, 70154, 70165, 70166

CISCO-BUG-ID: CSCur01461

IAVA: 2014-A-0142

CISCO-SA: cisco-sa-20140926-bash

EDB-ID: 34765, 34766, 34777

CERT: 252743