F5 Networks BIG-IP : Multiple GNU Bash vulnerabilities (SOL15629) (Shellshock)

Critical Nessus Plugin ID 78197

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VPR Score: 9.6

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution SOL15629.

See Also

https://www.f5.com/labs

http://www.nessus.org/u?d8374474

https://devcentral.f5.com/articles/cve-2014-6271-shellshocked

http://www.nessus.org/u?658e7e22

http://www.nessus.org/u?48d59554

https://support.f5.com/csp/article/K15629

Plugin Details

Severity: Critical

ID: 78197

File Name: f5_bigip_SOL15629.nasl

Version: 1.26

Type: local

Published: 2014/10/10

Updated: 2019/11/12

Dependencies: 76940

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Critical

VPR Score: 9.6

CVSS v2.0

Base Score: 10

Temporal Score: 8.7

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 9.4

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:f5:big-ip_access_policy_manager, cpe:/a:f5:big-ip_advanced_firewall_manager, cpe:/a:f5:big-ip_application_acceleration_manager, cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_application_visibility_and_reporting, cpe:/a:f5:big-ip_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_manager, cpe:/a:f5:big-ip_wan_optimization_manager, cpe:/a:f5:big-ip_webaccelerator, cpe:/h:f5:big-ip, cpe:/h:f5:big-ip_protocol_security_manager

Required KB Items: Host/local_checks_enabled, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/09/25

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

IAVA: 2014-A-0142