SINEC INS Privilege and Password Hashing Flaws

Local privilege escalation in Siemens SINEC INS (versions prior to V1.0 SP2 Update 6) stems from a binary shipped with the Linux cap_dac_override capability, which bypasses filesystem discretionary access control checks. An authenticated local attacker can leverage this overly broad capability to read or modify any file on the system, ultimately obtaining root. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Weak password hashing in Siemens SINEC INS (all versions prior to V1.0 SP2 Update 6) exposes stored credentials to efficient offline recovery due to a static, hardcoded salt shared universally across all users and installations, combined with an insufficient iteration count. An attacker who has obtained high-privileged local access and can extract the password store can leverage the known static salt to construct targeted rainbow tables or run accelerated brute-force attacks, potentially recovering plaintext passwords and achieving unauthorized access to the application and downstream industrial network infrastructure. No public exploit code or CISA KEV listing has been identified at time of analysis, but the cryptographic weakness is deterministic - once hashes are obtained, the static salt eliminates per-user uniqueness and dramatically reduces attack cost.