CVE intelligence and bounded remediation

CVE-2023-2538 — Tyan S5552/S5552Wgm4Nr-Ex Firmware security vulnerability

Medium CVSS 5.8

A CWE-552 "Files or Directories Accessible to External Parties” in the web interface of the Tyan S5552 BMC version 3.00 allows an unauthenticated remote attacker to retrieve the private key of the TLS certificate in use by the BMC via forced browsing. This can then be abused to perform Man-in-the-Middle (MitM) attacks against victims that access the web interface through HTTPS.

Severity
Medium
CVSS
5.8 (3.1)
Published
2023-07-05
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-552

Affected products

  • tyan / s5552/s5552wgm4nr-ex_firmware / 3.0.0
  • tyan / s5552/s5552wgm4nr_firmware / 3.0.0
  • tyan / s5552/s5552gm4nr_firmware / 3.0.0
  • tyan / s5552/s5552gm2nr_firmware / 3.0.0

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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