CVE-2023-4415
Published: 18 August 2023
Summary
CVE-2023-4415 is a high-severity Improper Authentication (CWE-287) vulnerability in Ruijienetworks Rg-Ew1200G Firmware. Its CVSS base score is 7.3 (High).
Operationally, ranked in the top 0.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability rated critical has been identified in the Ruijie RG-EW1200G router running firmware version 07161417 r483. The issue resides in the /api/sys/login endpoint and stems from improper authentication (CWE-287), allowing manipulation that bypasses normal access controls. It carries a CVSS 3.1 score of 7.3 reflecting network-accessible attack complexity that is low and requires no privileges or user interaction.
Remote attackers can exploit the flaw without authentication to obtain limited read, write, and disruption capabilities on the affected device. Public proof-of-concept code has been released, confirming that the attack can be launched over the network against exposed management interfaces.
No vendor patch or mitigation guidance has been issued; the vendor was notified prior to disclosure but did not respond. The references consist of public exploit repositories and vulnerability database entries that document the issue but contain no remediation steps.
The EPSS score stands at 0.8997 with an identical recorded peak, indicating sustained high exploitation probability since publication alongside the availability of working exploit code.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-54278
Vulnerability details
A vulnerability was found in Ruijie RG-EW1200G 07161417 r483. It has been rated as critical. Affected by this issue is some unknown functionality of the file /api/sys/login. The manipulation leads to improper authentication. The attack may be launched remotely. The…
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exploit has been disclosed to the public and may be used. VDB-237518 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
- 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.
Detects unauthorized successful logons resulting from improper authentication implementations.
Documented procedures ensure personnel are trained on authentication mechanisms, tangibly lowering the risk of improper authentication being exploited.
Security awareness training instructs users on secure authentication practices and avoiding credential compromise.
Training on authentication mechanisms and best practices decreases the occurrence of improper authentication.
Non-repudiation requires strong authentication mechanisms to irrefutably attribute performed actions to specific individuals or processes.
Session content review can reveal authentication bypasses or failures in session establishment.
Review of authentication-related audit records can detect improper authentication mechanisms or bypasses.
Assessments check authentication mechanisms for correct implementation and effectiveness, reducing successful authentication bypass attempts.