CVE intelligence and bounded remediation

CVE-2019-5273 — USG9500 with versions of V500R001C30;V500R001C60 have a denial of service vulnerability

High CVSS 7.5

USG9500 with versions of V500R001C30;V500R001C60 have a denial of service vulnerability. Due to a flaw in the X.509 implementation in the affected products which can result in a large heap buffer overrun error, an attacker may exploit the vulnerability by a malicious certificate, resulting a denial of service on the affected products.

Severity
High
CVSS
7.5 (3.1)
Published
2019-12-26
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-120

Affected products

  • huawei / usg9500_firmware / v500r001c30
  • huawei / usg9500_firmware / v500r001c60

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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