Chisel is a fast TCP/UDP tunnel, transported over HTTP, secured via SSH. The Chisel server doesn't ever read the documented `AUTH` environment variable used to set credentials, which allows any unauthenticated user to connect, even if credentials were set. Anyone running the Chisel server that is using the `AUTH` environment variable to specify credentials to authenticate against is affected by this vulnerability. Chisel is often used to provide an entrypoint to a private network, which means services that are gated by Chisel may be affected. Additionally, Chisel is often used for exposing services to the internet. An attacker could MITM requests by connecting to a Chisel server and requesting to forward traffic from a remote port. This issue has been addressed in release version 1.10.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.
                
            Metrics
Affected Vendors & Products
References
        History
                    Tue, 15 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | epss 
 | epss 
 | 
Thu, 29 Aug 2024 07:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| References |  | |
| Metrics | threat_severity 
 | threat_severity 
 | 
Tue, 27 Aug 2024 13:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | Jpillora Jpillora chisel | |
| CPEs | cpe:2.3:a:jpillora:chisel:*:*:*:*:*:*:*:* | |
| Vendors & Products | Jpillora Jpillora chisel | |
| Metrics | ssvc 
 | 
Mon, 26 Aug 2024 22:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | Chisel is a fast TCP/UDP tunnel, transported over HTTP, secured via SSH. The Chisel server doesn't ever read the documented `AUTH` environment variable used to set credentials, which allows any unauthenticated user to connect, even if credentials were set. Anyone running the Chisel server that is using the `AUTH` environment variable to specify credentials to authenticate against is affected by this vulnerability. Chisel is often used to provide an entrypoint to a private network, which means services that are gated by Chisel may be affected. Additionally, Chisel is often used for exposing services to the internet. An attacker could MITM requests by connecting to a Chisel server and requesting to forward traffic from a remote port. This issue has been addressed in release version 1.10.0. All users are advised to upgrade. There are no known workarounds for this vulnerability. | |
| Title | Chisel AUTH environment variable not respected in server entrypoint | |
| Weaknesses | CWE-1068 CWE-306 | |
| References |  | |
| Metrics | cvssV3_1 
 | 
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-08-26T22:32:43.575Z
Updated: 2024-08-27T13:06:11.097Z
Reserved: 2024-08-16T14:20:37.325Z
Link: CVE-2024-43798
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-27T13:06:05.413Z
 NVD
                        NVD
                    Status : Awaiting Analysis
Published: 2024-08-26T23:15:04.160
Modified: 2024-08-27T13:01:37.913
Link: CVE-2024-43798
 Redhat
                        Redhat
                     ReportizFlow
ReportizFlow