CVE-2022-31847
Published: 14 June 2022
Summary
CVE-2022-31847 is a high-severity Forced Browsing (CWE-425) vulnerability in Wavlink Wn579X3 Firmware. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 2.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2022-31847 is an information disclosure vulnerability in the /cgi-bin/ExportAllSettings.sh endpoint of the WAVLINK WN579 X3 router running firmware M79X3.V5030.180719. The flaw, tracked under CWE-425, permits unauthenticated remote access to sensitive router configuration data when a specially crafted POST request is submitted. It carries a CVSS 3.1 base score of 7.5 reflecting network attack vector, low complexity, and high confidentiality impact without requiring privileges or user interaction.
An attacker with network reachability to the device can exploit the endpoint to retrieve router settings and credentials that would otherwise be protected. Successful exploitation yields direct exposure of sensitive information without authentication, enabling further reconnaissance or targeted follow-on attacks against the affected wireless router.
The two referenced GitHub disclosures detail the request construction used to trigger the leak but contain no vendor advisory, patch information, or mitigation guidance. The associated EPSS score reached a peak of 0.5844 with a current value of 0.5059, indicating sustained exploitation interest after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-53203
Vulnerability details
A vulnerability in /cgi-bin/ExportAllSettings.sh of WAVLINK WN579 X3 M79X3.V5030.180719 allows attackers to obtain sensitive router information via a crafted POST request.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Forcing a decision on every access request, including direct ones, reduces the exploitability of forced browsing by ensuring no unchecked access paths.
Forces all accesses through the reference monitor, preventing direct or forced requests that bypass checks.
Enforcing access for all logical requests prevents unauthorized direct access to protected resources.
Displaying the notification before further access on public systems prevents direct resource requests from bypassing the required system use terms and consent.
Decoy endpoints catch forced browsing and direct requests, deflecting attackers from legitimate resources while enabling analysis.
Blocks unauthorized direct requests or forced browsing by denying input access to non-authorized actors.