CVE-2024-39768
Published: 14 January 2025
Summary
CVE-2024-39768 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).
Operationally, ranked in the top 29.4% 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Requires validation and bounds checking of the cli_name POST parameter to directly prevent stack-based buffer overflows in the set_qos() function.
Implements memory protections such as stack canaries, ASLR, and non-executable memory to mitigate exploitation of stack buffer overflows even if input validation fails.
Mandates timely remediation of known flaws like CVE-2024-39768 through firmware updates to eliminate the buffer overflow vulnerability.
NVD Description
Multiple buffer overflow vulnerabilities exist in the internet.cgi set_qos() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to stack-based buffer overflow. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.This vulnerability exists in…
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the `cli_name` POST parameter.
Deeper analysisAI
CVE-2024-39768 consists of multiple stack-based buffer overflow vulnerabilities in the set_qos() functionality of the internet.cgi script on the Wavlink AC3000 router running firmware version M33A8.V5030.210505. These issues, classified under CWE-120, are triggered by a specially crafted HTTP request targeting the `cli_name` POST parameter.
An attacker with high privileges can exploit these vulnerabilities by sending an authenticated HTTP request to the affected endpoint. 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) indicates network accessibility with low attack complexity, no user interaction required, and a scope change that enables high impacts on confidentiality, integrity, and availability, potentially leading to arbitrary code execution.
Mitigation guidance is available in the Talos Intelligence advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2022.
Details
- CWE(s)