How the CVE Works:
CVE-2025-1296 affects Nomad Community and Enterprise editions, where sensitive information such as workload identity tokens and client secret tokens are inadvertently exposed in audit logs. This occurs due to improper logging mechanisms that fail to redact or omit these tokens during audit log generation. Attackers with access to these logs can extract the tokens, potentially compromising workload identities and client secrets. This vulnerability is particularly critical in multi-tenant environments where audit logs might be shared or accessed by unauthorized users. The issue is resolved in Nomad Community Edition 1.9.7 and Nomad Enterprise 1.9.7, 1.8.11, and 1.7.19 by implementing proper token redaction in audit logs.
DailyCVE Form:
Platform: Nomad
Version: <1.9.7, <1.8.11, <1.7.19
Vulnerability: Information Exposure
Severity: Moderate
Date: Mar 10, 2025
What Undercode Say:
Exploitation:
- Access Audit Logs: Attackers gain access to Nomad audit logs through misconfigured permissions or compromised systems.
- Extract Tokens: Sensitive tokens are extracted from the logs using simple text parsing tools.
- Impersonate Workloads: Use the stolen tokens to impersonate workloads or clients, potentially gaining unauthorized access to resources.
Protection:
- Upgrade Nomad: Update to Nomad Community Edition 1.9.7 or Enterprise 1.9.7, 1.8.11, or 1.7.19.
- Audit Log Permissions: Restrict access to audit logs to authorized personnel only.
- Token Redaction: Implement custom logging mechanisms to redact sensitive tokens if upgrading is not immediately possible.
Commands:
- Check Nomad Version:
nomad version
- Upgrade Nomad:
sudo apt-get update && sudo apt-get install nomad
- Audit Log Review:
grep -i "token" /var/log/nomad/audit.log
Code Snippets:
- Custom Log Redaction (Python):
import re def redact_tokens(log_line): tokens = re.findall(r'\b(?:[bash]{24,})\b', log_line) for token in tokens: log_line = log_line.replace(token, "[bash]") return log_line with open("/var/log/nomad/audit.log", "r") as log_file: for line in log_file: print(redact_tokens(line)) - Nomad Configuration for Secure Logging:
audit { enabled = true sink "file" { type = "file" format = "json" path = "/var/log/nomad/audit.log" redact = [bash] } }
Analytics:
- Impact: Moderate, as it requires access to audit logs but can lead to significant breaches if exploited.
- Prevalence: Likely in environments where audit logs are not properly secured or monitored.
- Mitigation Rate: High, as upgrading to patched versions resolves the issue.
By following these steps, organizations can mitigate the risks associated with CVE-2025-1296 and ensure the security of their Nomad deployments.
References:
Reported By: https://github.com/advisories/GHSA-c3q9-q986-vrwh
Extra Source Hub:
Undercode
