To test if your version of Bash is vulnerable to this issue, run the following command:<\/p>\n
$ env x='() { :;}; echo vulnerable’ bash -c “echo this is a test”<\/strong><\/p><\/blockquote>\n
If the output of the above command looks as follows:<\/p>\n
vulnerable<\/strong>
\n this is a test<\/strong><\/p><\/blockquote>\nyou are using a vulnerable version of Bash. The patch used to fix this issue ensures that no code is allowed after the end of a Bash function. Thus, if you run the above example with the patched version of Bash, you should get an output similar to:<\/p>\n
$ env x='() { :;}; echo vulnerable’ bash -c “echo this is a test”<\/strong>
\n bash: warning: x: ignoring function definition attempt<\/strong>
\n bash: error importing function definition for `x’<\/strong>
\n this is a test<\/strong><\/p><\/blockquote>\n<\/p>\n","protected":false},"excerpt":{"rendered":"
To test if your version of Bash is vulnerable to this issue, run the following command: $ env x='() {<\/p>\n