CVE-2024-39357
Published: 14 January 2025
Summary
CVE-2024-39357 is a critical-severity Stack-based Buffer Overflow (CWE-121) 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 35.8% 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-16 (Memory Protection).
Deeper analysis
CVE-2024-39357 is a stack-based buffer overflow vulnerability (CWE-121) in the SetName() functionality of wireless.cgi on the Wavlink AC3000 router running firmware version M33A8.V5030.210505. The flaw allows a specially crafted HTTP request to trigger the overflow, enabling arbitrary command execution. Published on 2025-01-14, it carries 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).
An authenticated attacker with high privileges can exploit this vulnerability remotely over the network with low attack complexity and no user interaction required. By sending a malicious HTTP request to the vulnerable wireless.cgi endpoint, the attacker achieves arbitrary command execution, potentially leading to full compromise of the device given the high impacts on confidentiality, integrity, and availability across the changed scope.
Mitigation details are available in the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2039.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-38364
Vulnerability details
A stack-based buffer overflow vulnerability exists in the wireless.cgi SetName() 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 this vulnerability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack buffer overflow in wireless.cgi web endpoint enables remote RCE via crafted HTTP request (T1190); resulting arbitrary command execution on Unix-like router firmware maps to Unix Shell (T1059.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires validation of HTTP request inputs to wireless.cgi SetName() functionality, directly preventing stack-based buffer overflows from specially crafted requests.
Implements runtime memory protections such as stack canaries or ASLR that mitigate exploitation of stack-based buffer overflows leading to arbitrary command execution.
Mandates timely identification, reporting, and patching of flaws like this buffer overflow in router firmware to prevent exploitation.