Advantech WebAccess webvrpcs Service BwOpcSvc.dll sprintf Uncontrolled Format String Remote Code Execution Vulnerability
February 5th, 2016
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on vulnerable instances of Advantech WebAccess. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of the 0x13881 IOCTL in the BwOpcTool subsystem. An uncontrolled format string vulnerability exists in a call to sprintf. An attacker can use this vulnerability to execute arbitrary code in the context of an administrator of the system.
Additional Details
Advantech has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-16-014-01
Disclosure Timeline
- 2015-09-16 - Vulnerability reported to vendor
- 2016-02-05 - Coordinated public release of advisory
Credit
Anonymous
