Bash: Code Injection (Updated fix for GLSA 201409-09)

Bash: Code Injection (Updated fix for GLSA 201409-09) A parsing flaw related to functions and environments in Bash could allow attackers to inject code. The unaffected packages listed in GLSA 201409-09 had an incomplete fix. bash 2014-09-25 2014-10-04 523592 local, remote 3.1_p18-r1 3.2_p52-r1 4.0_p39-r1 4.1_p12-r1 4.2_p48-r1 4.2_p48-r1

Bash is the standard GNU Bourne Again SHell.

Stephane Chazelas reported that Bash incorrectly handles function definitions, allowing attackers to inject arbitrary code (CVE-2014-6271). Gentoo Linux informed about this issue in GLSA 201409-09.

Tavis Ormandy reported that the patch for CVE-2014-6271 was incomplete. As such, this GLSA supersedes GLSA 201409-09.

A remote attacker could exploit this vulnerability to execute arbitrary commands even in restricted environments.

There is no known workaround at this time.

All Bash 3.1 users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-3.1_p18-r1:3.1"

All Bash 3.2 users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-3.2_p52-r1:3.2"

All Bash 4.0 users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-4.0_p39-r1:4.0"

All Bash 4.1 users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-4.1_p12-r1:4.1"

All Bash 4.2 users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-shells/bash-4.2_p48-r1"

CVE-2014-7169 keytoaster keytoaster