PT-2025-14442 · Cryptolib · Cryptolib
Mirkobitetto
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Published
2025-04-01
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Updated
2025-10-22
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CVE-2025-30356
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
CryptoLib versions 1.3.3 and earlier
Description
CryptoLib is a software solution utilizing 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. A heap buffer overflow exists in the
Crypto TC ApplySecurity function due to an incomplete validation check on the fl (frame length) field. While a previous patch addressed an underflow issue involving fl, it did not fully prevent unsafe calculations. An attacker can craft malicious frames that cause a negative tf payload len, which is then interpreted as a large unsigned value, leading to a heap buffer overflow in a memcpy call.Recommendations
Versions prior to 1.3.4 are affected. At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Integer Underflow
Memory Corruption
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Related Identifiers
Affected Products
Cryptolib