CVE-2024-2243 is an OS command injection vulnerability identified in the csmock tool, specifically affecting versions 3.5.1 and 3.5.2. The vulnerability arises from improper neutralization of special elements in OS commands, allowing an attacker with a valid Kerberos ticket for the OSH service to execute arbitrary commands on OSH worker nodes. This flaw also enables disclosure of confidential Snyk authentication tokens, which could be leveraged for further compromise or lateral movement. The vulnerability requires the attacker to have legitimate access as a regular OSH service user, but does not require user interaction or elevated privileges beyond that. The CVSS 3.1 score of 7.6 reflects a high severity due to the network attack vector, low complexity, and significant confidentiality impact. The vulnerability could be exploited remotely over the network, given valid Kerberos authentication, to run commands that may alter system integrity or availability, although the primary impact is confidentiality loss. No public exploits have been reported yet, but the presence of sensitive token disclosure increases the risk profile. The vulnerability is particularly relevant for environments using OSH services integrated with Kerberos authentication and Snyk for security scanning or token management. The lack of patch links suggests that fixes may be pending or distributed through vendor channels. Organizations should prioritize mitigation to prevent unauthorized command execution and token leakage.

For European organizations, this vulnerability poses a significant risk to confidentiality due to potential exposure of Snyk authentication tokens, which could lead to unauthorized access to security tooling and further compromise. Integrity and availability impacts are possible but less severe, as arbitrary command execution could disrupt OSH worker operations or modify system states. Organizations relying on Kerberos-based authentication for OSH services are particularly vulnerable, as the attack requires a valid Kerberos ticket but no additional user interaction. The vulnerability could facilitate lateral movement within networks, especially in environments where OSH workers have elevated privileges or access to sensitive data. Given the widespread use of Kerberos in enterprise environments across Europe, especially in sectors like finance, government, and technology, the risk is amplified. The absence of known exploits in the wild provides a window for proactive mitigation, but the high severity score indicates that exploitation could have serious consequences. Confidentiality breaches could undermine trust in security processes and lead to regulatory compliance issues under GDPR if personal or sensitive data is exposed.

1. Monitor for and restrict issuance of Kerberos tickets to only trusted users and services, minimizing the attack surface. 2. Implement network segmentation to isolate OSH workers and limit lateral movement in case of compromise. 3. Apply principle of least privilege to OSH service accounts to reduce potential impact of arbitrary command execution. 4. Closely monitor OSH worker logs and system commands for unusual or unauthorized activity indicative of exploitation attempts. 5. Coordinate with csmock maintainers or vendors to obtain and deploy patches or updated versions that address CVE-2024-2243 as soon as they become available. 6. Temporarily disable or restrict access to OSH services for users who do not require it until patches are applied. 7. Review and rotate Snyk authentication tokens to invalidate any potentially compromised credentials. 8. Employ intrusion detection systems tuned to detect OS command injection patterns and anomalous Kerberos ticket usage. 9. Conduct security awareness training for administrators managing OSH and Kerberos environments to recognize and respond to suspicious activity. 10. Consider deploying additional application-layer controls or input validation mechanisms if feasible to prevent injection of malicious commands.