CVE-2021-43398

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Summary

CVECVE-2021-43398
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-11-04 21:15:00 UTC
Updated2023-11-07 03:39:00 UTC
Description** DISPUTED ** Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value.

Risk And Classification

Problem Types: CWE-203

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cryptopp Crypto All All All All

References

ReferenceSourceLinkTags
Dangerous Correlation Between Key Length and Execution Time · Issue #1080 · weidai11/cryptopp · GitHub MISC github.com
Dangerous Correlation Between Key Length and Execution Time · Issue #1080 · weidai11/cryptopp · GitHub MISC github.com
Crypto++ Library 8.6 | Free C++ Class Library of Cryptographic Schemes MISC cryptopp.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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