CVE-2021-4236
Published: 27 December 2022
Summary
CVE-2021-4236 is a critical-severity NULL Pointer Dereference (CWE-476) vulnerability in Web Project Web. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 35.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-7668
Vulnerability details
Web Sockets do not execute any AuthenticateMethod methods which may be set, leading to a nil pointer dereference if the returned UserData pointer is assumed to be non-nil, or authentication bypass. This issue only affects WebSockets with an AuthenticateMethod hook.…
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Request handlers that do not explicitly use WebSockets are not vulnerable.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.