CVE-2023-39108
Published: 01 August 2023
Summary
CVE-2023-39108 is a high-severity SSRF (CWE-918) vulnerability in Rconfig Rconfig. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 0.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
rconfig version 3.9.4 contains a server-side request forgery vulnerability in the doDiff function of /classes/compareClass.php. The flaw is triggered when an attacker supplies a crafted URL through the path_b parameter, causing the application to issue arbitrary HTTP requests to attacker-controlled destinations. The issue is tracked as CWE-918 and carries a CVSS 3.1 score of 8.8.
An authenticated user with low-privileged access can exploit the defect over the network without user interaction. Successful abuse allows the attacker to reach internal systems, exfiltrate data, or interact with services that are otherwise inaccessible from the attacker’s position, resulting in impacts to confidentiality, integrity, and availability.
The EPSS score for this CVE currently stands at 0.7845, indicating a substantial likelihood of exploitation attempts. Public references consist of technical write-ups that demonstrate the request forgery vector but contain no vendor advisory or patch information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-42854
Vulnerability details
rconfig v3.9.4 was discovered to contain a Server-Side Request Forgery (SSRF) via the path_b parameter in the doDiff Function of /classes/compareClass.php. This vulnerability allows authenticated attackers to make arbitrary requests via injection of crafted URLs.
- 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.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.