CVE intelligence and bounded remediation

CVE-2023-50445 — Gl-Inet Gl-Mt1300 Firmware security vulnerability

High CVSS 7.8

Shell Injection vulnerability GL.iNet A1300 v4.4.6, AX1800 v4.4.6, AXT1800 v4.4.6, MT3000 v4.4.6, MT2500 v4.4.6, MT6000 v4.5.0, MT1300 v4.3.7, MT300N-V2 v4.3.7, AR750S v4.3.7, AR750 v4.3.7, AR300M v4.3.7, and B1300 v4.3.7., allows local attackers to execute arbitrary code via the get_system_log and get_crash_log functions of the logread module, as well as the upgrade_online function of the upgrade module.

Severity
High
CVSS
7.8 (3.1)
Published
2023-12-28
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78, CWE-77

Affected products

  • gl-inet / gl-mt1300_firmware / 4.3.7
  • gl-inet / gl-mt300n-v2_firmware / 4.3.7
  • gl-inet / gl-ar750s_firmware / 4.3.7
  • gl-inet / gl-ar750_firmware / 4.3.7
  • gl-inet / gl-ar300m_firmware / 4.3.7
  • gl-inet / gl-b1300_firmware / 4.3.7

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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