CryptoLib Unbounded Memory Allocation in KMC HTTP Response Handler Allows Resource Exhaustion

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 libcurl write_callback function in the KMC crypto service client allows unbounded memory growth by reallocating response buffers without any size limit or overflow check. A malicious KMC server can return arbitrarily large HTTP responses, forcing the client to allocate excessive memory until the process is terminated by the OS. This issue has been patched in version 1.4.3.

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未经控制的内存分配

CryptoLib 安全漏洞

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 1.4.3之前版本存在安全漏洞，该漏洞源于KMC加密服务客户端的libcurl write_callback函数允许无限制内存增长，可能导致分配过多内存。

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