CVE-2025-29913 (GCVE-0-2025-29913)
Vulnerability from cvelistv5 – Published: 2025-03-17 22:50 – Updated: 2025-03-18 14:07
VLAI
EPSS
VEX
Title
CryptoLib's Crypto_TC_Prep_AAD Has Buffer Overflow Due to Integer Underflow
Summary
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. A critical heap buffer overflow vulnerability was identified in the `Crypto_TC_Prep_AAD` function of CryptoLib versions 1.3.3 and prior. This vulnerability allows an attacker to trigger a Denial of Service (DoS) or potentially execute arbitrary code (RCE) by providing a maliciously crafted telecommand (TC) frame that causes an unsigned integer underflow. The vulnerability lies in the function `Crypto_TC_Prep_AAD`, specifically during the computation of `tc_mac_start_index`. The affected code incorrectly calculates the MAC start index without ensuring it remains within the bounds of the `ingest` buffer. When `tc_mac_start_index` underflows due to an incorrect length calculation, the function attempts to access an out-of-bounds memory location, leading to a segmentation fault. The vulnerability is still present in the repository as of commit `d3cc420ace96d02a5b7e83d88cbd2e48010d5723`.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-18 14:07 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/nasa/CryptoLib/security/adviso… | x_refsource_CONFIRM |
Impacted products
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"value": "CryptoLib ofrece una soluci\u00f3n exclusivamente de software que utiliza el Protocolo de Seguridad de Enlace de Datos Espaciales CCSDS - Procedimientos Extendidos (SDLS-EP) para proteger las comunicaciones entre una nave espacial que ejecuta el Sistema de Vuelo (cFS) y una estaci\u00f3n terrestre. Se identific\u00f3 una vulnerabilidad cr\u00edtica de desbordamiento del b\u00fafer de pila en la funci\u00f3n `Crypto_TC_Prep_AAD` de las versiones 1.3.3 y anteriores de CryptoLib. Esta vulnerabilidad permite a un atacante desencadenar una denegaci\u00f3n de servicio (DoS) o potencialmente ejecutar c\u00f3digo arbitrario (RCE) al proporcionar una trama de telecomando (TC) maliciosa que causa un desbordamiento por debajo de un entero sin signo. La vulnerabilidad reside en la funci\u00f3n `Crypto_TC_Prep_AAD`, espec\u00edficamente durante el c\u00e1lculo de `tc_mac_start_index`. El c\u00f3digo afectado calcula incorrectamente el \u00edndice de inicio MAC sin garantizar que permanezca dentro de los l\u00edmites del b\u00fafer de ingesta. Cuando `tc_mac_start_index` presenta un desbordamiento por debajo de lo permitido debido a un c\u00e1lculo de longitud incorrecto, la funci\u00f3n intenta acceder a una ubicaci\u00f3n de memoria fuera de los l\u00edmites, lo que provoca un fallo de segmentaci\u00f3n. La vulnerabilidad persiste en el repositorio a partir del commit `d3cc420ace96d02a5b7e83d88cbd2e48010d5723`."
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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