Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-43644

Severity CVSS v4.0:
Pending analysis
Type:
CWE-306 Missing Authentication for Critical Function
Publication date:
25/09/2023
Last modified:
26/09/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sagernet:sing-box:*:*:*:*:*:*:*:* 1.4.5 (excluding)
cpe:2.3:a:sagernet:sing-box:1.5.0:beta1:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta10:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta11:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta12:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta2:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta3:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta4:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta5:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta6:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta7:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta8:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:beta9:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:rc1:*:*:*:*:*:*
cpe:2.3:a:sagernet:sing-box:1.5.0:rc2:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools