Unauthenticated OS Command Injection in Gateway Management

Synway SMG Gateway Management Software contains an OS command injection vulnerability in the RADIUS configuration endpoint at /en/9-2radius.php where the radius_address POST parameter is split and interpolated directly into a sed command without sanitization. An unauthenticated remote attacker can inject arbitrary shell commands by submitting a POST request with crafted radius_address, radius_address2, shared_secret2, source_ip, timeout, or retry parameters along with save=1 and enable_radius=1 to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-07-11 (UTC).

Casky was already ahead

This CVE exploits attack patterns that Casky's 419matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

Synway SMG Gateway Management Software contains a critical OS command injection vulnerability (CWE-78) in its RADIUS configuration endpoint that allows unauthenticated attackers to execute arbitrary shell commands. The vulnerability exists because user-supplied input from the radius_address and related POST parameters is directly interpolated into a sed command without proper sanitization. This affects organizations using Synway's gateway management solution for telecommunications infrastructure, potentially allowing attackers to achieve complete system compromise with a single HTTP request. The lack of authentication requirement significantly increases the attack surface, as any internet-connected instance becomes immediately exploitable.

Casky's 419 matching skills leverage Claude AI's extended reasoning to detect the attack patterns associated with this CVE across three critical MITRE ATT&CK phases: Initial Access (TA0001), where unauthenticated HTTP POST requests target the /en/9-2radius.php endpoint; Execution (TA0002), where injected shell metacharacters (pipes, semicolons, command substitution) within parameter values trigger OS command execution; and Command and Control (TA0043), where established reverse shells or data exfiltration patterns emerge. Practitioners using Casky would identify suspicious POST requests containing shell syntax in RADIUS parameters, detect unusual process spawning from web server processes, and recognize patterns indicating lateral movement or credential theft following initial exploitation—all mapped to specific ATT&CK techniques for rapid response and threat hunting.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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419 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2025-71284.

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malware analysis · medium

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MITRE ATT&CK Techniques

TA0001 TA0043 TA0002

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