CVE-2024-39762
Published: 14 January 2025
Summary
CVE-2024-39762 is a critical-severity Command Injection (CWE-77) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 45.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2024-39762 involves multiple OS command injection vulnerabilities (CWE-77) in the internet.cgi set_add_routing() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505. A specially crafted HTTP request, particularly targeting the `netmask` POST parameter, can lead to arbitrary command execution on the device.
These vulnerabilities can be exploited by an authenticated attacker with high privileges (PR:H) who sends a malicious HTTP request to the affected component. Successful exploitation grants arbitrary command execution, potentially compromising the router's confidentiality, integrity, and availability, as reflected in the CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
Mitigation guidance and additional technical details are available in the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2020.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38356
Vulnerability details
Multiple OS command injection vulnerabilities exist in the internet.cgi set_add_routing() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to arbitrary command execution. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A command injection…
more
vulnerability exists in the `netmask` POST parameter.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct OS command injection in public-facing router web interface (internet.cgi) enables remote exploitation (T1190) and arbitrary command execution via network device CLI (T1059.008).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates OS command injection in the 'netmask' POST parameter of internet.cgi set_add_routing() by validating inputs to block arbitrary command execution.
Addresses the specific flaw in Wavlink AC3000 firmware M33A8.V5030.210505 through timely flaw remediation such as firmware patching.
Restricts the 'netmask' parameter to valid values like proper subnet masks, preventing injection of shell metacharacters in crafted HTTP requests.