Vulnerability Description
CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to 1.4.2, there is a missing bounds check in Crypto_Key_update() (crypto_key_mgmt.c) which allows a remote attacker to trigger a stack-based buffer overflow by supplying a TLV packet with a spoofed length field. The function calculates the number of keys from an attacker-controlled field (pdu_len), which may exceed the static array size (kblk[98]), leading to an out-of-bounds write and potential memory corruption. This vulnerability is fixed in 1.4.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nasa | Cryptolib | < 1.4.2 |
Related Weaknesses (CWE)
References
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-w6c3-pxvr-6m6jExploitVendor Advisory
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-w6c3-pxvr-6m6jExploitVendor Advisory
FAQ
What is CVE-2025-64096?
CVE-2025-64096 is a vulnerability with a CVSS score of 8.8 (HIGH). CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight Syst...
How severe is CVE-2025-64096?
CVE-2025-64096 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-64096?
Check the references section above for vendor advisories and patch information. Affected products include: Nasa Cryptolib.