{"id":"CVE-2025-64096","summary":"CryptoLib vulnerable to Stack Buffer Overflow in Crypto_Key_Update due to missing TLV length check","details":"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.","aliases":["GHSA-w6c3-pxvr-6m6j"],"modified":"2026-08-12T03:51:44.223235972Z","published":"2025-10-30T17:09:24.240Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64096.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-121"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64096.json"},{"type":"ADVISORY","url":"https://github.com/nasa/CryptoLib/security/advisories/GHSA-w6c3-pxvr-6m6j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64096"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nasa/cryptolib","events":[{"introduced":"0"},{"fixed":"309c1c4a57313044215ca730abfa3fbe9e5feed0"}],"database_specific":{"cpe":"cpe:2.3:a:nasa:cryptolib:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.4.2"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v1.4.0","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-64096.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}