CVE-2023-31664
Published: 23 May 2023
Summary
CVE-2023-31664 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Wso2 Api Manager. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 3.5% 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 reflected cross-site scripting vulnerability exists in the /authenticationendpoint/login.do endpoint of WSO2 API Manager versions prior to 4.2.0. The flaw, tracked as CVE-2023-31664 and assigned CWE-79, allows arbitrary web scripts or HTML to be executed through a crafted value supplied in the tenantDomain parameter. It carries a CVSS 3.1 score of 6.1 reflecting network attack vector, low complexity, no required privileges, and required user interaction with changed scope.
An unauthenticated attacker can deliver a malicious link or redirect a victim user to the login endpoint containing the injected payload. Successful exploitation results in script execution within the context of the victim’s session, enabling theft of sensitive data such as authentication tokens or cookies and limited interaction with the application on the victim’s behalf.
The WSO2 API Manager 4.2.0 release resolves the issue. Public references include a proof-of-concept repository and the project’s GitHub issue tracker documenting the component-level fix. The associated EPSS score has remained at 0.2683 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-35959
Vulnerability details
A reflected cross-site scripting (XSS) vulnerability in /authenticationendpoint/login.do of WSO2 API Manager before 4.2.0 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the tenantDomain parameter.
- 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 submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.