CVE-2021-33846

Summary

Fresenius Kabi Vigilant Software Suite (Mastermed Dashboard) version 2.0.1.3 issues authentication tokens to authenticated users that are signed with a symmetric encryption key. An attacker in possession of the key can issue valid JWTs and impersonate arbitrary users.

Affected Software

Weaknesses

• CWE-327: CWE-327 Use of a Broken or Risky Cryptographic Algorithm

Workarounds

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should: • Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the Internet. • Locate control system networks and remote devices behind firewalls and isolate them from the business network. • When remote access is required, use secure methods, such as virtual private networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as its connected devices.

ADP Enrichment

CVE Program Container

Additional References

• https://www.cisa.gov/uscert/ics/advisories/icsma-21-355-01

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://www.cisa.gov/uscert/ics/advisories/icsma-21-355-01

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