CVE-2021-4236

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.

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f	Patch Third Party Advisory
https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f	Patch Third Party Advisory
https://pkg.go.dev/vuln/GO-2021-0107	Exploit Patch Third Party Advisory
https://pkg.go.dev/vuln/GO-2021-0107	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:web_project:web:*:*:*:*:*:go:*:*

History

11 Apr 2025, 17:15

Type	Values Removed	Values Added
References	~~(MISC) https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f - Patch, Third Party Advisory~~	() https://github.com/ecnepsnai/web/commit/5a78f8d5c41ce60dcf9f61aaf47a7a8dc3e0002f - Patch, Third Party Advisory
References	~~(MISC) https://pkg.go.dev/vuln/GO-2021-0107 - Exploit, Patch, Third Party Advisory~~	() https://pkg.go.dev/vuln/GO-2021-0107 - Exploit, Patch, Third Party Advisory

Information

Published : 2022-12-27 22:15

Updated : 2025-04-11 17:15

NVD link : CVE-2021-4236

Mitre link : CVE-2021-4236

JSON object : View

Products Affected

web_project

web

CWE

CWE-476

NULL Pointer Dereference

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