CVE-2022-34046
Published: 20 July 2022
Summary
CVE-2022-34046 is a high-severity Incorrect Authorization (CWE-863) vulnerability in Wavlink Wn533A8 Firmware. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 1.8% 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-2022-34046 is an access control vulnerability, tracked under CWE-863, that affects the Wavlink WN533A8 wireless router running firmware version M33A8.V5030.190716. The flaw resides in the sysinit.shtml endpoint and permits unauthenticated retrieval of sensitive configuration data containing user credentials.
An attacker with network access to the device can exploit the issue by issuing a simple HTTP request to a URL of the form http://IP_ADDRESS/sysinit.shtml?r=52300, then inspecting the returned page source for the logincheck(user) string. Successful exploitation yields the administrator username and password in plaintext, resulting in a CVSS 3.1 score of 7.5 due to the high confidentiality impact and lack of required privileges or user interaction.
Public references consist of exploit disclosures on Packet Storm and an accompanying proof-of-concept archive; no vendor advisory or firmware patch information is provided in the available sources. The associated EPSS score has remained at 0.5748 from the time of disclosure through the present measurement.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-37076
Vulnerability details
An access control issue in Wavlink WN533A8 M33A8.V5030.190716 allows attackers to obtain usernames and passwords via view-source:http://IP_ADDRESS/sysinit.shtml?r=52300 and searching for [logincheck(user);].
- 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.
Periodic review and update of procedures reduces incorrect authorization implementations over time.
Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.
Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.
The authorization process and usage restrictions help prevent incorrect authorization for remote access types.
Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.
Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.
Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.
Ensures authorization decisions for external system use are correctly implemented and enforced.