CVE-2025-30356

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 1.3.3 and earlier, a heap buffer overflow vulnerability persists in the Crypto_TC_ApplySecurity function due to an incomplete validation check on the fl (frame length) field. Although CVE-2025-29912 addressed an underflow issue involving fl, the patch fails to fully prevent unsafe calculations. As a result, an attacker can still 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.

Reserved 2025-03-21 | Published 2025-04-01 | Updated 2025-04-02 | Assigner GitHub_M

Problem types

CWE-191: Integer Underflow (Wrap or Wraparound)

CWE-787: Out-of-bounds Write

Product status

<= 1.3.3
affected

References

github.com/...ptoLib/security/advisories/GHSA-6w2x-w7w3-85w2

github.com/...ommit/59d1bce7608c94c6131ef4877535075b0649799c

cve.org (CVE-2025-30356)

nvd.nist.gov (CVE-2025-30356)

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