CVE-2019-3975

Name of the Vulnerable Software and Affected Versions Advantech WebAccess/SCADA version 8.4.1

Description The issue is related to a stack-based buffer overflow that allows a remote, unauthenticated attacker to execute arbitrary code via a crafted IOCTL 70603 RPC message. This is due to improper validation of user-provided data before copying it into a fixed-size buffer in the BwPAlarm.dll library. The exploitation of this issue can enable a remote attacker to execute arbitrary code using a specially crafted RPC message.

Recommendations For Advantech WebAccess/SCADA version 8.4.1, consider disabling the GetUserPasswd function in the BwPAlarm.dll library as a temporary workaround until a patch is available. Restrict access to the IOCTL 70603 RPC endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.