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CVE-2025-29912— CryptoLib Has Heap Buffer Overflow Due to Unsigned Integer Underflow in Crypto_TC_ProcessSecurity

Quick assessment

Affected
nasa CryptoLib
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CryptoLib是NASA开源的一个应用程序。用于使用 CCSDS 空间数据链路安全协议提供纯软件解决方案。 CryptoLib 1.3.3及之前版本存在安全漏洞，该漏洞源于Crypto_TC_ProcessSecurity函数存在无符号整数下溢，可能导致堆缓冲区溢出，从而引发拒绝服务或远程代码执行。

AI Predicted 9.8 Difficulty: Moderate EPSS 1.10% · P63
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I. Basic Information for CVE-2025-29912

Vulnerability Information
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Vulnerability Title
CryptoLib Has Heap Buffer Overflow Due to Unsigned Integer Underflow in Crypto_TC_ProcessSecurity
Source: CVE Program / CVE List V5
Vulnerability 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 versions 1.3.3 and prior, an unsigned integer underflow in the `Crypto_TC_ProcessSecurity` function of CryptoLib leads to a heap buffer overflow. The vulnerability is triggered when the `fl` (frame length) field in a Telecommand (TC) packet is set to 0. This underflow causes the frame length to be interpreted as 65535, resulting in out-of-bounds memory access. This critical vulnerability can be exploited to cause a denial of service (DoS) or potentially achieve remote code execution. Users of CryptoLib are advised to apply the recommended patch or avoid processing untrusted TC packets until a fix is available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
CryptoLib 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CryptoLib是NASA开源的一个应用程序。用于使用 CCSDS 空间数据链路安全协议提供纯软件解决方案。 CryptoLib 1.3.3及之前版本存在安全漏洞，该漏洞源于Crypto_TC_ProcessSecurity函数存在无符号整数下溢，可能导致堆缓冲区溢出，从而引发拒绝服务或远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nasa CryptoLib <= 1.3.3 -

II. Public POCs for CVE-2025-29912

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III. Intelligence Information for CVE-2025-29912

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Patches & Fixes for CVE-2025-29912 (1)

Vendor Advisories for CVE-2025-29912 (1)

Same Patch Batch · nasa · 2025-03-17 · 5 CVEs total

CVE-2025-29909 CryptoLib's Crypto_TC_ApplySecurity() Has a Heap Buffer Overflow Vulnerability
CVE-2025-29910 CryptoLib's crypto_handle_incrementing_nontransmitted_counter Function has Memory Leak
CVE-2025-29911 CryptoLib Has Heap Buffer Overflow in Crypto_AOS_ProcessSecurity Function
CVE-2025-29913 CryptoLib's Crypto_TC_Prep_AAD Has Buffer Overflow Due to Integer Underflow

IV. Related Vulnerabilities

Same product: CryptoLib
Same vendor: nasa
Same weakness: CWE-122

V. Comments for CVE-2025-29912

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