Synopsis
Tenable discovered an unauthenticated remote command injection vulnerability in Indusoft Web Studio 8.1 SP2. The vulnerability is exercised via the custom remote agent protocol that is typically found on port 1234 or 51234. An attacker can issue a specially crafted command 66 which causes IWS to load a DB connection file off of a network share using SMB. The DB file can contain OS commands that will be executed at the privilege level used by IWS.
Additional References
https://sw.aveva.com/hubfs/assets-2018/pdf/security-bulletin/SecurityBulletin_LFSec133.pdf?hsLang=enhttps://ics-cert.us-cert.gov/advisories/ICSA-19-036-01
Disclosure Timeline
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