CVE-2025-59534
📋 TL;DR
CVE-2025-59534 is a command injection vulnerability in CryptoLib's initialize_kerberos_keytab_file_login() function that allows attackers to execute arbitrary shell commands by injecting malicious input. This affects spacecraft communications secured using SDLS-EP protocol with cFS systems. The vulnerability exists because user-controlled input is directly passed to system() without sanitization.
💻 Affected Systems
- NASA CryptoLib
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of spacecraft-ground communications, allowing command execution on affected systems, potential data exfiltration, and disruption of space mission operations.
Likely Case
Unauthorized command execution on systems running vulnerable CryptoLib, potentially compromising the security of space-ground communications.
If Mitigated
Limited impact with proper input validation and command sanitization in place, restricting exploitation attempts.
🎯 Exploit Status
Exploitation requires access to the vulnerable function with user-controlled input. The vulnerability is straightforward command injection via system() call.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.2
Vendor Advisory: https://github.com/nasa/CryptoLib/security/advisories/GHSA-jw5c-58hr-m3v3
Restart Required: Yes
Instructions:
1. Download CryptoLib version 1.4.2 or later from official repository. 2. Replace vulnerable version with patched version. 3. Recompile and redeploy affected applications. 4. Restart services using CryptoLib.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all user-controlled parameters passed to initialize_kerberos_keytab_file_login() function.
# Review and modify source code to validate/sanitize inputs before system() calls
Disable Vulnerable Function
allTemporarily disable or restrict access to initialize_kerberos_keytab_file_login() if not essential for operations.
# Comment out or remove vulnerable function calls in source code
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems using CryptoLib
- Deploy application-level firewalls to monitor and block suspicious command patterns
🔍 How to Verify
Check if Vulnerable:
Check CryptoLib version and review source code for vulnerable system() calls in initialize_kerberos_keytab_file_login() function.Check Version:
grep 'CRYPTOLIB_VERSION' cryptolib_config.h || check package manager for installed versionVerify Fix Applied:
Verify CryptoLib version is 1.4.2 or later and examine commit 3ccb1b306026bb20a028fbfdcf18935f7345ed2f for patched code.📡 Detection & Monitoring
Log Indicators:
- Unusual shell command executions from CryptoLib processes
- Error logs showing failed command execution attempts
- Authentication failures related to kerberos keytab initialization
Network Indicators:
- Unexpected command execution patterns in space-ground communications
- Anomalous network traffic from CryptoLib-enabled systems
SIEM Query:
process_name:"cryptolib" AND cmdline:"system(*" OR process_name:"cryptolib" AND cmdline_contains_suspicious_patterns