CVE-2024-39367
Published: 14 January 2025
Summary
CVE-2024-39367 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 30.9% 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-2024-39367 is an OS command injection vulnerability in the firewall.cgi iptablesWebsFilterRun() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505. The flaw allows a specially crafted HTTP request to trigger arbitrary code execution and is classified under CWE-77. It has a CVSS v3.1 base score of 9.1 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H), indicating critical severity due to its network accessibility, low complexity, and potential for high-impact confidentiality, integrity, and availability effects across a changed scope.
An authenticated attacker with high privileges can exploit this vulnerability by sending a malicious HTTP request to the affected firewall.cgi endpoint. Successful exploitation leads to arbitrary code execution on the underlying operating system, potentially granting full control over the device.
For mitigation details, refer to the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2023. The vulnerability was published on January 14, 2025.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38390
Vulnerability details
An os command injection vulnerability exists in the firewall.cgi iptablesWebsFilterRun() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
OS command injection in public-facing web endpoint (firewall.cgi) directly enables T1190 exploitation for initial access and T1059.004 Unix shell command execution on the Linux-based router firmware.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents OS command injection vulnerability by validating and sanitizing specially crafted HTTP inputs to the firewall.cgi iptablesWebsFilterRun() function.
Remediates the specific command injection flaw in firewall.cgi through identification, reporting, and timely patching of the vulnerability.
Limits the impact of arbitrary code execution from authenticated high-privilege requests by enforcing least privilege on the processes handling firewall.cgi inputs.