Teleport 9.3.6 is vulnerable to Command injection leading to Remote Code Execution. An attacker can craft a malicious ssh agent installation link by URL encoding a bash escape with carriage return line feed. This url encoded payload can be used in place of a token and sent to a user in a social engineering attack. This is fully unauthenticated attack utilizing the trusted teleport server to deliver the payload.
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-36633
- https://packetstormsecurity.com/files/168137/Teleport-9.3.6-Command-Injection.html
- https://github.com/gravitational/teleport/pull/14726
- https://github.com/gravitational/teleport/pull/14726/commits/46c23b9b64b944d1e82d2c8a79083f291ffdd3b6
- https://github.com/gravitational/teleport/releases/tag/v10.1.2
- https://github.com/gravitational/teleport/releases/tag/v8.3.17
- https://github.com/gravitational/teleport/releases/tag/v9.3.13
- https://github.com/advisories/GHSA-6xf3-5hp7-xqqg