PT-2023-28895 · Sing-Box · Sing-Box

Nekohasekai · Published 2023-09-25 · Updated 2023-10-02 · CVE-2023-43644

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Sing-box versions prior to 1.4.4 Sing-box versions prior to 1.5.0-rc.4

Description The issue affects all SOCKS5 inbounds with user authentication in Sing-box, allowing an attacker to bypass authentication when specially crafted requests are sent. Users unable to update should not expose the SOCKS5 inbound to insecure environments.

Recommendations Update to sing-box 1.4.4 or to 1.5.0-rc.4 to resolve the issue. As a temporary workaround, do not expose the SOCKS5 inbound to insecure environments.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2023-43644

GHSA-R5HM-MP3J-285G

GO-2023-2077

Affected Products

Sing-Box

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43644.json · Exploit
• https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g · Vendor Advisory
• https://osv.dev/vulnerability/GO-2023-2077 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-43644 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-43644 · Security Note
• https://osv.dev/vulnerability/GHSA-r5hm-mp3j-285g · Vendor Advisory
• https://github.com/SagerNet/sing-box/commit/9891fd672f5da9f20f59a1693271a946727f49e2 · Note
• https://github.com/SagerNet/sing-box/releases/tag/v1.4.5 · Note
• https://github.com/SagerNet/sing-box · Note
• https://github.com/SagerNet/sing/commit/5b05b5c147d9650e8accb4441e216c72a61f4859 · Note
• https://twitter.com/CVEnew/status/1706389162423664979 · Twitter Post
• https://t.me/cibsecurity/71020 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1706438193703256446 · Twitter Post
• https://twitter.com/cracbot/status/1706549265231933814 · Twitter Post