| Advisory ID |
ruby_advisory_db/gems/camaleon_cms/GHSA-7x4w-cj9r-h4v9 |
| Aliases |
GHSA-7x4w-cj9r-h4v9
|
| Summary |
Camaleon CMS vulnerable to remote code execution through code injection (GHSL-2024-185)
The [actions](https://github.com/owen2345/camaleon-cms/blob/feccb96e542319ed608acd3a16fa5d92f13ede67/app/controllers/camaleon_cms/admin/media_controller.rb#L51-L52)
defined inside of the MediaController class do not check whether a
given path is inside a certain path (e.g. inside the media folder).
If an attacker performed an account takeover of an administrator
account (See: GHSL-2024-184) they could delete arbitrary files or
folders on the server hosting Camaleon CMS. The
[crop_url](https://github.com/owen2345/camaleon-cms/blob/feccb96e542319ed608acd3a16fa5d92f13ede67/app/controllers/camaleon_cms/admin/media_controller.rb#L64-L65)
action might make arbitrary file writes (similar impact to GHSL-2024-182)
for any authenticated user possible, but it doesn't seem to work currently.
Arbitrary file deletion can be exploited with following code path:
The parameter folder flows from the actions method:
```ruby
def actions
authorize! :manage, :media if params[:media_action] != 'crop_url'
params[:folder] = params[:folder].gsub('//', '/') if params[:folder].present?
case params[:media_action]
[..]
when 'del_file'
cama_uploader.delete_file(params[:folder].gsub('//', '/'))
render plain: ''
```
into the method delete_file of the CamaleonCmsLocalUploader
class (when files are uploaded locally):
```ruby
def delete_file(key)
file = File.join(@root_folder, key)
FileUtils.rm(file) if File.exist? file
@instance.hooks_run('after_delete', key)
get_media_collection.find_by_key(key).take.destroy
end
```
Where it is joined in an unchecked manner with the root folder and
then deleted.
**Impact**
This issue may lead to a defective CMS or system.
**Remediation**
Normalize all file paths constructed from untrusted user input
before using them and check that the resulting path is inside the
targeted directory. Additionally, do not allow character sequences
such as .. in untrusted input that is used to build paths.
**See also:**
[CodeQL: Uncontrolled data used in path expression](https://codeql.github.com/codeql-query-help/ruby/rb-path-injection/)
[OWASP: Path Traversal](https://owasp.org/www-community/attacks/Path_Traversal)
|
| Status |
Published |
|
Exploitability |
0.5
|
| Weighted Severity |
0.0
|
| Risk |
|
| Affected and Fixed Packages |
Package Details
|
| Introduced and Fixed Package Commit Patches |
Package Commit Patches Details
|
Weaknesses (0)
|
No exploits are available.
|
No EPSS data available for this advisory.
| Patch URL |
|
There are no known patches.
|
|
There are no known vectors.
|
There are no SSVC decisions available.