CVE-2023-43644 CRITICAL

CVE-2023-43644: Improper authentication in the SOCKS5 inbound in sing-box

Vendor Sagernet
Product sing-box
Weakness CWE-306 · Missing auth
Published September 25, 2023
Last update September 24, 2024
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 25, 2023 CVE published
September 24, 2024 Record updated