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

High Nessus Plugin ID 78596

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: High

ID: 78596

File Name: cisco_telepresence_vcs_CSCur01461.nasl

Version: 1.13

Type: remote

Family: CISCO

Published: 2014/10/21

Updated: 2018/11/15

Dependencies: 72182

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:H/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:telepresence_video_communication_server_software

Required KB Items: Cisco/TelePresence_VCS/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/10/17

Vulnerability Publication Date: 2014/09/24

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