OMRON CX-Supervisor sr3 File Parsing UploadPLCProgram API Arbitrary File Deletion Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to delete arbitrary files on vulnerable installations of OMRON CX-Supervisor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of project files. The issue results from the lack of proper validation of a user-supplied string, which could allow the deletion of any file on the system. An attacker could use this to delete data or create a denial-of-service condition.
Additional Details
Omron has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-19-017-01
Disclosure Timeline
- 2018-07-09 - Vulnerability reported to vendor
- 2019-01-19 - Coordinated public release of advisory
Credit
Esteban Ruiz (mr_me) of Source Incite
