CVE intelligence and bounded remediation

CVE-2020-5724 — The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify endpoint

High CVSS 7.5

The Grandstream UCM6200 series before 1.0.20.22 is vulnerable to an SQL injection via the HTTP server's websockify endpoint. A remote unauthenticated attacker can invoke the challenge action with a crafted username and discover user passwords.

Severity
High
CVSS
7.5 (3.1)
Published
2020-03-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-89

Affected products

  • grandstream / ucm6202_firmware
  • grandstream / ucm6204_firmware
  • grandstream / ucm6208_firmware

Matched remediation archetype

SQL and data-query injection

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Check exposure

  • Trace request, message, file, and stored values into SQL, ORM query fragments, filters, sort expressions, and other data-query languages.
  • Inventory database roles, reachable schemas, multi-tenant boundaries, and whether stacked or administrative operations are enabled.
  • Check both direct queries and second-order use of previously stored values.

Remediate safely

  • Use parameterized queries or safe query builders for all values; map identifiers and operators through explicit allowlists.
  • Remove raw query concatenation and give the application account only the tables and operations it requires.
  • Update affected data-access components and add regression tests for query structure preservation with inert edge-case inputs.

Authoritative sources

Complete CVE record and remediation plan

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