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TI-2023-23385 Aliases CVE-2023-43660

SSH key password bypassed in warpgate

Priority LOW 35CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Fix Fixed warpgate (warp-tech): 0.8.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
warp-techwarpgatebefore 0.8.10.8.1Patch availableCNA
  • warpgate Vendorwarp-tech Affected before 0.8.1 Fixed in 0.8.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:*before 0.8.1Vulnerablewarp-tech
  • cpe:2.3:a:warpgate_project:warpgate:*:*:*:*:*:*:*:* Versions before 0.8.1 Vulnerable ·warp-tech

Remediation

  • Fix · CNA warpgate (warp-tech) Fixed in 0.8.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-43660

References

Patch 1

Advisory 1

  • TI-2023-18898 User login confusion with SSO in warpgate CVSS 3.1HIGH 8.8
  • TI-2026-30510 Russh: Pre-auth DoS via unbounded allocation in keyboard-interactive auth CVSS 3.1HIGH 7.5
  • TI-2024-29059 Russh has an OOM Denial of Service due to allocation of untrusted amount CVSS 3.1HIGH 7.5
  • TI-2026-32313 Warpgate: SSO CSRF -- State Token Not Validated on Return CVSS 3.1MEDIUM 6.5
  • TI-2025-34558 Russh is missing an overflow check during channel windows adjust CVSS 3.1MEDIUM 6.5
  • TI-2023-26551 User authorization bug leading to privilege escalation in warpgate CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences