Bitbucket Environment Variable RCE
Description
For various versions of Bitbucket, there is an authenticated command injection vulnerability that can be exploited by injecting environment variables into a user name. This module achieves remote code execution as the `atlbitbucket` user by injecting the `GIT_EXTERNAL_DIFF` environment variable, a null character as a delimiter, and arbitrary code into a user's user name. The value (payload) of the `GIT_EXTERNAL_DIFF` environment variable will be run once the Bitbucket application is coerced into generating a diff. This module requires at least admin credentials, as admins and above only have the option to change their user name.
Author(s)
- Ry0taK
- y4er
- Shelby Pace
Platform
Linux,Unix,Windows
Architectures
cmd, x86, x64
Development
Module Options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/multi/http/bitbucket_env_var_rce
msf exploit(bitbucket_env_var_rce) > show targets
...targets...
msf exploit(bitbucket_env_var_rce) > set TARGET < target-id >
msf exploit(bitbucket_env_var_rce) > show options
...show and set options...
msf exploit(bitbucket_env_var_rce) > exploit
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