Skip to content
Threat Feed
high advisory

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

IT Operations 48h

Threat Hunt

Monitor for C-Kermit process execution originating from network-facing activity or unexpected peer connection strings

T1059.003 medium medium confidence hunt now

Data: Process command line arguments, Network connection destination metadata

Mitigations

Restrict C-Kermit usage to known, trusted peers only until security updates are applied

immediate IT Operations

RCE via malicious peer