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 version 1.4.3, the Crypto_Config_Add_Gvcid_Managed_Parameters function only checks whether gvcid_counter > GVCID_MAN_PARAM_SIZE. As a result, it allows up to the 251st entry, which causes a write past the end of the array, overwriting gvcid_counter located immediately after gvcid_managed_parameters_array[250]. This leads to an out-of-bounds write, and the overwritten gvcid_counter may become an arbitrary value, potentially affecting the parameter lookup/registration logic that relies on it. This issue has been patched in version 1.4.3.
References
| Link | Resource |
|---|---|
| https://github.com/nasa/CryptoLib/releases/tag/v1.4.3 | Release Notes |
| https://github.com/nasa/CryptoLib/security/advisories/GHSA-9x7j-gx23-7m5r | Vendor Advisory |
Configurations
History
15 Jan 2026, 21:48
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/nasa/CryptoLib/releases/tag/v1.4.3 - Release Notes | |
| References | () https://github.com/nasa/CryptoLib/security/advisories/GHSA-9x7j-gx23-7m5r - Vendor Advisory | |
| First Time |
Nasa cryptolib
Nasa |
|
| CPE | cpe:2.3:a:nasa:cryptolib:*:*:*:*:*:*:*:* |
10 Jan 2026, 01:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-10 01:16
Updated : 2026-01-15 21:48
NVD link : CVE-2026-21897
Mitre link : CVE-2026-21897
CVE.ORG link : CVE-2026-21897
JSON object : View
Products Affected
nasa
- cryptolib
CWE
CWE-787
Out-of-bounds Write