Auth bypass in Warpgate Project
CVE-2023-43660
Warpgate is a smart SSH, HTTPS and MySQL bastion host for Linux that doesn't need special client apps. The SSH key verification for a user can be bypassed by sending an SSH key offer without a signature. This allows bypassing authentication under following conditions: 1. The attacker knows the username and a valid target name 2. The attacked knows the user's public key and 3. Only SSH public key authentication is required for the user account. This issue has been addressed in version 0.8.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability class: Broken Authentication
EPSS: 0.003 (17.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Warpgate_project Warpgate
- Warp-tech Warpgate — versions < 0.8.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-43660?
- CVE-2023-43660 is a medium-severity vulnerability in Warpgate Project, classified under Improper Authentication. CVSS score: 4.8/10. Published 2023-09-27.
- How severe is CVE-2023-43660?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2023-43660 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.