cvedb.io
CVE-2021-43398
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2021-11-04T21:15:09.520 · Last modified 2026-06-17T04:10:55.000

Summary

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

Affected products

cryptopp — crypto\+\+

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.