SQL Injection in network-device (CVE-2023-46453, CVSS 9.8)

Summary

SQL injection in network-device (CVE-2023-46453). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

Certain GL.iNet devices with 4.x firmware allow authentication bypass (resulting in administrative control of the device) via a username that is both a valid SQL statement and a valid regular expression. For example, this affects version 4.3.7 on GL-MT3000 GL-AR300M GL-B1300 GL-AX1800 GL-AR750S GL-MT2500 GL-AXT1800 GL-X3000 and GL-SFT1200.

Source: NIST National Vulnerability Database NVD GitHub Advisory

AI summary

Written by an external AI model and may contain mistakes. Check the original description and references below before acting on it.

There is a significant risk in GL.iNet devices with 4.x firmware. Exploiting this flaw, attackers can improperly access the device as an administrator using specific strings. This could lead to data breaches and misuse of the system. No specific patch has been provided yet, so extra caution is needed. In similar past contexts, there have been incidents of data leaks.

An authentication bypass vulnerability has been discovered in GL.iNet firmware 4.x. Models like GL-MT3000 and GL-AR300M are affected. This issue arises from a username that is valid both as an SQL statement and a regular expression, allowing unauthorized access. Attackers can potentially gain administrative control, posing a threat to system integrity. Currently, no effective patch is available, and no specific workaround has been provided. Implementation of pattern matching through A/B testing or WAF is recommended for attack detection.

❓ What is the problem

GL.iNet devices with 4.x firmware

📍 Affected scope

Authentication bypass by exploiting username input that acts both as an SQL statement and regular expression

🔥 Severity

Critical, CVSS score 9.8 (network attack, no authentication required, no user interaction required)

🔧 How to fix

No patch available

🛡️ Workaround

No specific workaround available

🔍 Detection

Consider using WAFs for pattern matching detection

Related past incidents Similar incidents extracted from past CVEs

CVE-2014-0160 (Heartbleed)

An earlier major security flaw allowing remote attackers to read memory at an encryption library level leading to critical data compromise.

CVE-2018-7600 (Drupalgeddon 2)

An instance of remote code execution vulnerability in Drupal CMS that was also rated critical.

CVE-2021-44228 (Log4Shell)

A critical vulnerability in Apache Log4j allowing remote code execution similar in flaw severity.

If this happens at your company Expected impact per business scenario

📌 E-commerce site utilizing GL.iNet routers for network infrastructure.

Could allow attackers to remotely gain administrative access, steal customer data, or disrupt sales operations.

📌 Company internal system relying on affected firmware for secure connections.

Potential unauthorized access to sensitive internal data, risking company confidentiality and integrity.

📌 Home users using these routers for personal network security.

Compromise of personal data and misuse of internet-connected devices, posing privacy threats.

Recommended action

Heighten security measures like WAF, log monitoring for unusual patterns, and restrict router access points while awaiting official patch.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
依存マニフェストで影響コンポーネントを特定する。
7
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。

SQL Injection in network-device (CVE-2023-46453)