CVE-2024-39790
Published: 14 January 2025
Summary
CVE-2024-39790 is a critical-severity External Control of System or Configuration Setting (CWE-15) vulnerability in Wavlink Wl-Wn533A8 Firmware. Its CVSS base score is 9.1 (Critical).
Operationally, ranked at the 13.7th percentile by exploit likelihood (below the median); 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 AC-3 (Access Enforcement) and CM-5 (Access Restrictions for Change).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Enforces approved authorizations to directly prevent permission bypass in the nas.cgi set_ftp_cfg() functionality exploited by authenticated high-privilege attackers.
Validates information inputs such as the ftp_max_sessions POST parameter to prevent configuration injection vulnerabilities.
Limits configuration change capabilities, including access to set_ftp_cfg(), to authorized roles to mitigate external config control vulnerabilities.
NVD Description
Multiple external config control vulnerabilities exist in the nas.cgi set_ftp_cfg() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A configuration injection vulnerability…
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exists within the `ftp_max_sessions` POST parameter.
Deeper analysisAI
CVE-2024-39790 involves multiple external configuration control vulnerabilities in the nas.cgi set_ftp_cfg() functionality of the Wavlink AC3000 router running firmware version M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass, while a configuration injection vulnerability exists within the ftp_max_sessions POST parameter. The issue, published on 2025-01-14, 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) and maps to CWE-15.
These vulnerabilities can be exploited by an authenticated attacker with high privileges (PR:H) who sends a specially crafted HTTP request to the affected component. Successful exploitation enables permission bypass and configuration injection, granting high impacts on confidentiality, integrity, and availability, with a changed scope (S:C).
Mitigation details are available in the Talos Intelligence advisory TALOS-2024-2056 at https://talosintelligence.com/vulnerability_reports/TALOS-2024-2056.
Details
- CWE(s)