C-Kermit: Multiple vulnerabilities including RCE
Multiple vulnerabilities were discovered in the C-Kermit communication software during a code audit, including a remote code execution vector exploitable by a malicious peer and an authentication bypass with TLS certificate spoofing.
Triage facts
Revision 1- Applicability
- C-Kermit
- Evidence
- Unknown
- Severity
- High
- Action
- Elevated
- Sources
- 2 public sources
- Freshness
- Revision 1Nov 2, 05:05 UTC
- Source quality
- A2Likely
A code quality sweep of C-Kermit has identified three distinct security vulnerabilities. The most critical issue allows for remote code execution when a user interacts with a malicious peer. Additional vulnerabilities include an authentication bypass and TLS certificate spoofing. These issues are currently documented under GitHub Security Advisories; CVE identifiers are pending allocation. Users are advised to monitor the upstream repository for patch releases.
Impact
Successful exploitation of the RCE vulnerability could allow an attacker to achieve remote code execution on the system running C-Kermit by simulating a malicious peer connection. The authentication bypass and TLS spoofing flaws compromise the integrity and confidentiality of communication sessions.
Recommendation
- Monitor the C-Kermit GitHub repository and security advisories for the release of patched versions.
- Audit systems running C-Kermit to identify and restrict exposure to untrusted or public peer connections.
- Until patches are available, avoid connecting C-Kermit to untrusted remote peers, as these interactions facilitate the observed RCE and authentication bypass vectors.
Immediate actions
Inventory all systems running C-Kermit for future patching
Threat Hunt
Monitor for C-Kermit process execution originating from network-facing activity or unexpected peer connection strings
Data: Process command line arguments, Network connection destination metadata
Mitigations
Restrict C-Kermit usage to known, trusted peers only until security updates are applied
RCE via malicious peer