Bash Vulnerability Shellshock (CVE-2014-6271)

Publish date: November 18, 2014
  Severity: CRITICAL
  CVE Identifier: CVE-2014-6271
  Advisory Date: SEP 25, 2014

  DESCRIPTION

This vulnerability, which is found existing in certain versions of GNU Bourne Again Shell (Bash) can allow an attacker to execute commands on an affected system. It allows for remote code execution on servers that run these Linux distributions. Bash is used by most Unix and Linux systems, as well as OS X. This vulnerability was reportedly being exploited in the wild already. Trend Micro spotted samples, which are actual payload of the said exploit code. Trend Micro detects this as ELF_BASHLITE.A.

All versions of Bash up to and including version 4.3 are vulnerable.

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Discovery protects network connections via the following rule:

  • CVE-2014-6271-SHELLSHOCK_REQUEST

Trend Micro Deep Discovery also has the following DDI rule:

  • 1618 – Shellshock HTTP REQUEST

Trend Micro Deep Security protects users from this threat via the following update (DSRU14-028) and rule:

  • 1006256 – GNU Bash Remote Code Execution Vulnerability

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1006256
  Trend Micro Deep Security DPI Rule Name: 1006256 - GNU Bash Remote Code Execution Vulnerability

  OTHER INFORMATION

Shellshock
Shellshock: A Technical Report
About the Shellshock Vulnerability: The Basics of the "Bash Bug"
Trend Micro products and the Shellshock – Linux Bash Vulnerability (Bash Bug) [CVE-2014-6271 and CVE-2014-7169]
Get FREE protection for Shellshock

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