CVE-2023-43644: Github.com/sagernet/sing box Sing-box Vulnerable To Improper Authentication Vulnerability
CRITICALCVE-2023-43644 is a CRITICAL (CVSS 9.1) sing-box vulnerable to improper authentication vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Github.com/sagernet/sing box libraries in the Go ecosystem. The issue involves sing-box vulnerable to improper authentication in the socks inbound. Remediation is available by upgrading affected packages to version 1.4.5, 1.5.0-rc.5, 0.2.12-0.20230925092853-5b05b5c147d9.
CVE-2023-43644 at a Glance
Security Impact
CVSS: 9.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).
How to Fix CVE-2023-43644
To remediate this vulnerability, upgrade all affected Github.com/sagernet/sing box dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/sagernet/sing-box to 1.4.5Upgrade github.com/sagernet/sing-box to 1.5.0-rc.5Upgrade github.com/sagernet/sing to 0.2.12-0.20230925092853-5b05b5c147d9Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/sagernet/sing-boxHow to Check if You Are Affected
To determine whether your application is affected by CVE-2023-43644, inspect your project dependencies for Github.com/sagernet/sing box:
inspect dependencies for github.com/sagernet/sing-boxAnalyze the terminal output to locate any version of Github.com/sagernet/sing box in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.5), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Github.com/sagernet/sing box, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-43644 Affected Github.com/sagernet/sing box Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/sagernet/sing-box
|
Go |
< 1.4.5
|
1.4.5
|
|
github.com/sagernet/sing-box
|
Go |
≥ 1.5.0-beta.1
< 1.5.0-rc.5
|
1.5.0-rc.5
|
|
github.com/sagernet/sing
|
Go |
< 0.2.12-0.20230925092853-5b05b5c147d9
|
0.2.12-0.20230925092853-5b05b5c147d9
|
References
Frequently Asked Questions
What is CVE-2023-43644?
Which Github.com/sagernet/sing box versions are affected?
What version fixes CVE-2023-43644?
Is github.com/sagernet/sing-box affected?
Is github.com/sagernet/sing affected?
What is the CVSS score of CVE-2023-43644?
What CWE is associated with CVE-2023-43644?
How can I check Go dependencies for CVE-2023-43644?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-r5hm-mp3j-285g",
"modified" : "2023-09-26T19:35:39Z",
"published" : "2023-09-26T19:35:39Z",
"aliases" : [ "CVE-2023-43644" ],
"summary" : "sing-box vulnerable to improper authentication in the SOCKS inbound",
"details" : "### Impact\n\nThis vulnerability allows specially crafted requests to bypass authentication, affecting all SOCKS inbounds with user authentication.\n\n### Patches\n\nUpdate to sing-box 1.4.5 or 1.5.0-rc.5 and later versions.\n\n### Workarounds\n\nDon't expose the SOCKS5 inbound to insecure environments.\n",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/sagernet/sing-box"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.4.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/sagernet/sing-box"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.5.0-beta.1"
}, {
"fixed" : "1.5.0-rc.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/sagernet/sing"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.2.12-0.20230925092853-5b05b5c147d9"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/SagerNet/sing-box/security/advisories/GHSA-r5hm-mp3j-285g"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-43644"
}, {
"type" : "WEB",
"url" : "https://github.com/SagerNet/sing-box/commit/9891fd672f5da9f20f59a1693271a946727f49e2"
}, {
"type" : "WEB",
"url" : "https://github.com/SagerNet/sing/commit/5b05b5c147d9650e8accb4441e216c72a61f4859"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/SagerNet/sing-box"
}, {
"type" : "WEB",
"url" : "https://github.com/SagerNet/sing-box/releases/tag/v1.4.5"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-306" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2023-09-26T19:35:39Z",
"nvd_published_at" : "2023-09-25T20:15:11Z"
}
}