CVE-2022-48570 Information

Description

Crypto++ through 8.4 contains a timing side channel in ECDSA signature generation. Function FixedSizeAllocatorWithCleanup could write to memory outside of the allocation if the allocated memory was not 16-byte aligned. NOTE: this issue exists because the CVE-2019-14318 fix was intentionally removed for functionality reasons.

Reference

https://github.com/weidai11/cryptopp/releases/tag/CRYPTOPP_8_4_0 https://github.com/weidai11/cryptopp/issues/992