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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://gist.github.com/R3tro16/a99a058d24a06692721a6a3fade9649d
disclosure@vulncheck.com
https://github.com/jtescher/image_optimizer
disclosure@vulncheck.com
https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer.rb#…
disclosure@vulncheck.com
https://github.com/jtescher/image_optimizer/blob/v1.9.0/lib/image_optimizer/she…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/image-optimizer-1.3.0-through-1.9.0-os-com…
disclosure@vulncheck.com