module
Bitbucket Environment Variable RCE
| Disclosed | Created |
|---|---|
| 11/16/2022 | 03/16/2023 |
Disclosed
11/16/2022
Created
03/16/2023
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.
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.
Authors
Ry0taKy4erShelby Pace
Platform
Linux,Unix,Windows
Architectures
cmd, x86, x64
References
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 /(e) > show actions
...actions...
msf /(e) > set ACTION < action-name >
msf /(e) > show options
...show and set options...
msf /(e) > run
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