Have you reported this issue to the upstream bash developers?
** Changed in: bash (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bash in Ubuntu. https://bugs.launchpad.net/bugs/1411318 Title: arbitrary code execution Status in bash package in Ubuntu: Confirmed Bug description: "The problem with bash's name references Bash 4.3 introduced declare -n ("name references") to mimic Korn shell's nameref feature, which permits variables to hold references to other variables (see FAQ 006 to see these in action). Unfortunately, the implementation used in Bash has some issues. {…} Bash's name reference implementation still allows arbitrary code execution: $ foo() { declare -n var=$1; echo "$var"; } $ foo 'x[i=$(date)]' bash: i=Thu Mar 27 16:34:09 EDT 2014: syntax error in expression (error token is "Mar 27 16:34:09 EDT 2014") It's not an elegant example, but you can clearly see that the date command was actually executed. This is not at all what one wants." source: http://mywiki.wooledge.org/BashFAQ/048 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1411318/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp