by Kastro
Paper/Archive/CVE-2023-43644

CVE-2023-43644

SagerNet sing-box — Improper authentication in the SOCKS5 inbound in sing-box

EPSS 0.8%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 57.3.573 × 2011.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
sing-box< 1.4.5–CNA
sing-box>= 1.5.0-beta.1, < 1.5.0-rc.4–CNA
sing-box< 1.5.0-rc.51.5.0-rc.5CISA-ADP

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g