CVE-2025-34147

published 2025-08-04

CVE-2025-34147: An unauthenticated OS command injection vulnerability exists in the Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02). When configuring the device in…

Priority P2 62 critical 9.4 CVSS 4.0

AV A AC L AT N PR N UI N VC H VI H VA H SC H SI H SA H E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

An unauthenticated OS command injection vulnerability exists in the Shenzhen Aitemi M300 Wi-Fi Repeater (hardware model MT02). When configuring the device in Extender mode via its captive portal, the extap2g SSID field is inserted unescaped into a reboot-time shell script. This allows remote attackers within Wi-Fi range to inject arbitrary shell commands that execute as root during device reboot, leading to full system compromise.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
shenzhen_aitemi_e_commerce_co_ltd	m300_wi-fi_repeater	—	—

Detection & IOCs extracted from sources · hover to see the quote

path /protocol.csp

snort

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Shenzhen Aitemi protocol.csp multiple Parameters Command Injection Attempt (CVE-2025-34147, CVE-2025-34148, CVE-2025-34149, CVE-2025-34150, CVE-2025-34151)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:17; content:"/protocol.csp|3f|"; http.request_body; content:"fname|3d|net"; fast_pattern; pcre:"/(?:extap2g|ssid|key|user|passwd)\x3d[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/"; reference:cve,2025-34148; reference:cve,2025-34150; reference:cve,2025-34147; reference:url,chocapikk.com/posts/2025/when-a-wifi-name-gives-you-root-part-two/; reference:cve,2025-34149; reference:cve,2025-34151; classtype:attempted-admin; sid:2064879; rev:1; metadata:affected_product Shenzhen_Atemi, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_09_23, cve CVE_2025_34148_CVE_2025_34150_CVE_2025_34147_CVE_2025_34151_CVE_2025_34149, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

• → Exploit targets HTTP POST requests to /protocol.csp with a URI of exactly 17 bytes, and a request body containing 'fname=net'. Monitor for this combination as the entry point.
• → Injection is delivered via the parameters extap2g, ssid, key, user, or passwd containing shell metacharacters: semicolon (;), newline (\n), backtick (`), pipe (|), or dollar sign ($) — both raw and URL-encoded forms.
• → The injected commands execute as root at device reboot time, as the SSID value is inserted unescaped into a reboot-time shell script. Look for unexpected process spawning or persistence mechanisms post-reboot on affected devices. ↗
• → Attack is unauthenticated and exploitable by any attacker within Wi-Fi range of the device operating in Extender mode via its captive portal — no credentials required. ↗
• → Traffic is plaintext (no TLS). Deploy detection at both perimeter and internal network segments.

• · The Snort/Suricata rule (ET sid:2064879) covers five related CVEs simultaneously (CVE-2025-34147 through CVE-2025-34151). A match does not isolate which specific CVE is being exploited — triage is required to determine the exact vulnerable parameter.
• · The URI bsize match is exactly 17 bytes ('/protocol.csp?'). Any URL rewriting, proxy normalization, or path variation may cause the rule to miss the attack.

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CWE-78