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CVE-2018-5469: An Improper Restriction of Excessive Authentication Attempts issue was discovered in Belden Hirschmann RS…

CVE-2018-5469 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists 134 affected products, including Belden Hirschmann Rs20 0900mmm2tdau. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

An Improper Restriction of Excessive Authentication Attempts issue was discovered in Belden Hirschmann RS, RSR, RSB, MACH100, MACH1000, MACH4000, MS, and OCTOPUS Classic Platform Switches. An improper restriction of excessive authentication vulnerability in the web interface has been identified, which may allow an attacker to brute force authentication.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-307: Improper Restriction of Excessive Authentication Attempts

The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

Affected products

  • Belden Hirschmann Rs20 0900mmm2tdau: all versions listed by NVD
  • Belden Hirschmann Rs20 0900nnm4tdau: all versions listed by NVD
  • Belden Hirschmann Rs20 0900vvm2tdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600l2l2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600l2m2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600l2s2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600l2t1sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600m2m2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600m2t1sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600s2m2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600s2s2sdau: all versions listed by NVD
  • Belden Hirschmann Rs20 1600s2t1sdau: all versions listed by NVD
  • Belden Hirschmann Rsr20: all versions listed by NVD
  • Belden Hirschmann Rsr30: all versions listed by NVD
  • Belden Hirschmann Rsb20 0800m2m2saab: all versions listed by NVD

References