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  5. CVE-2023-43644

CVE-2023-43644: Missing Authentication for Critical Function

September 26, 2023 (updated October 2, 2023)

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.

References

  • github.com/SagerNet/sing-box/commit/9891fd672f5da9f20f59a1693271a946727f49e2
  • github.com/SagerNet/sing-box/releases/tag/v1.4.5
  • github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g
  • github.com/SagerNet/sing/commit/5b05b5c147d9650e8accb4441e216c72a61f4859
  • github.com/advisories/GHSA-r5hm-mp3j-285g
  • nvd.nist.gov/vuln/detail/CVE-2023-43644

Code Behaviors & Features

Detect and mitigate CVE-2023-43644 with GitLab Dependency Scanning

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Affected versions

All versions before 0.2.12-0.20230925092853-5b05b5c147d9

Fixed versions

  • v0.2.12-0.20230925092853-5b05b5c147d9

Solution

Upgrade to version 0.2.12-0.20230925092853-5b05b5c147d9 or above.

Impact 9.8 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-306: Missing Authentication for Critical Function

Source file

go/github.com/sagernet/sing/CVE-2023-43644.yml

Spotted a mistake? Edit the file on GitLab.

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