CVE-2023-43644

Improper authentication in the SOCKS5 inbound in sing-box

State: Published
Severity: 9.1 Critical
Published: Sep 25, 2023
Updated: Sep 24, 2024
Reserved: Sep 20, 2023

Description

Sing-box is an open source proxy system. Affected versions are subject to an authentication bypass when specially crafted requests are sent to sing-box. This affects all SOCKS5 inbounds with user authentication and an attacker may be able to bypass authentication. Users are advised to update to sing-box 1.4.4 or to 1.5.0-rc.4. Users unable to update should not expose the SOCKS5 inbound to insecure environments.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	GitHub_M

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
sing-boxSagerNet	< 1.4.5Affected >= 1.5.0-beta.1, < 1.5.0-rc.4Affected

References

https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g

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