CVE-2021-4236

Public Exploit
Panic or authentication bypass in github.com/ecnepsnai/web

Description

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. Request handlers that do not explicitly use WebSockets are not vulnerable.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory github.com Third-Party Advisory go.dev
Affected: github.com/ecnepsnai/web github.com/ecnepsnai/web
Published at:
Updated at:

References

Link Tags
https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f third party advisory patch
https://pkg.go.dev/vuln/GO-2021-0107 exploit third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-4236?
CVE-2021-4236 has been scored as a critical severity vulnerability.
How to fix CVE-2021-4236?
To fix CVE-2021-4236, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4236 being actively exploited in the wild?
It is possible that CVE-2021-4236 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4236?
CVE-2021-4236 affects github.com/ecnepsnai/web github.com/ecnepsnai/web.
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