Description
The image_optimizer Ruby gem 1.3.0 through 1.9.0 contains an OS command injection vulnerability in ImageOptimizer#identify_format that allows attackers to execute commands by supplying a crafted image path when the identify option is enabled. Attackers controlling the path, such as an uploaded file name, can append shell metacharacters like ';' that are executed via Ruby backticks with the Ruby process privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jtescher | image_optimizer | 1.3.0 – ≤ 1.9.0 | — |
References
- https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d third-party-advisory
- https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#L37-L47 technical-description
- https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/shell.rb#L30-L32 technical-description
- https://github.com/jtescher/image_optimizer product
- VulnCheck Advisory: image_optimizer 1.3.0 through 1.9.0 OS Command Injection via identify_format third-party-advisory