CVE-2023-43644
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductSagernet Sing-box
PublishedSep 25, 2023
First seenSep 25, 2023
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- sagernet sing-box1.4.5 or later
- github.com/sagernet/sing-box1.4.5, 1.5.0-rc.5 or later
- github.com/sagernet/sing0.2.12-0.20230925092853-5b05b5c147d9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sagernet sing-box | v < 1.4.5, 1.5.0 | 1.4.5 |
| github.com/sagernet/sing-boxGo | v < 1.4.5, 1.5.0-beta.1 ≤ v < 1.5.0-rc.5 | 1.4.5, 1.5.0-rc.5 |
| github.com/sagernet/singGo | v < 0.2.12-0.20230925092853-5b05b5c147d9 | 0.2.12-0.20230925092853-5b05b5c147d9 |
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