Advantech WebAccess webvrpcs Service ViewSrv.dll strcpy Stack-Based Buffer Overflow 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 0x27A7 IOCTL in the ViewSrv subsystem. A stack-based buffer overflow vulnerability exists in a call to strcpy. 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
