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. In versions 1.3.3 and prior, an unsigned integer underflow in the `Crypto_TC_ProcessSecurity` function of CryptoLib leads to a heap buffer overflow. The vulnerability is triggered when the `fl` (frame length) field in a Telecommand (TC) packet is set to 0. This underflow causes the frame length to be interpreted as 65535, resulting in out-of-bounds memory access. This critical vulnerability can be exploited to cause a denial of service (DoS) or potentially achieve remote code execution. Users of CryptoLib are advised to apply the recommended patch or avoid processing untrusted TC packets until a fix is available.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nasa | Cryptolib | < 1.4.0 |
Related Weaknesses (CWE)
References
- https://github.com/nasa/CryptoLib/commit/ca39cb96f21e76102aefb956d2c8c0ba0bd143cPatch
- https://github.com/nasa/CryptoLib/security/advisories/GHSA-3f5x-r59x-p8cfExploitVendor Advisory
FAQ
What is CVE-2025-29912?
CVE-2025-29912 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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-2025-29912?
CVE-2025-29912 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-29912?
Check the references section above for vendor advisories and patch information. Affected products include: Nasa Cryptolib.