CVE-2023-43644
9.1 · CRITICALOverview
CVE-2023-43644 is a critical-severity vulnerability affecting sagernet sing-box. It was published on September 25, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from sagernet. Update sing-box to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| sagernet | sing-box | >= 0, < 1.4.5 | Affected |
Frequently Asked Questions
What is CVE-2023-43644?
CVE-2023-43644 is a critical-severity vulnerability affecting sagernet sing-box. It was published on September 25, 2023 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2023-43644?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-43644?
Check the references section for vendor advisories and patches from sagernet. Update sing-box to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-43644?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-43644 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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