Vulnerability Details CVE-2021-43398
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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 64.9%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
Products affected by CVE-2021-43398
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cpe:2.3:a:cryptopp:crypto++:5.0
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cpe:2.3:a:cryptopp:crypto++:5.1
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cpe:2.3:a:cryptopp:crypto++:5.2
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cpe:2.3:a:cryptopp:crypto++:5.2.1
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cpe:2.3:a:cryptopp:crypto++:5.2.3
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cpe:2.3:a:cryptopp:crypto++:5.3.0
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cpe:2.3:a:cryptopp:crypto++:5.4
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cpe:2.3:a:cryptopp:crypto++:5.5
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cpe:2.3:a:cryptopp:crypto++:5.5.1
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cpe:2.3:a:cryptopp:crypto++:5.5.2
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cpe:2.3:a:cryptopp:crypto++:5.6.0
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cpe:2.3:a:cryptopp:crypto++:5.6.1
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cpe:2.3:a:cryptopp:crypto++:5.6.2
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cpe:2.3:a:cryptopp:crypto++:5.6.3
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cpe:2.3:a:cryptopp:crypto++:5.6.4
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cpe:2.3:a:cryptopp:crypto++:5.6.5
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cpe:2.3:a:cryptopp:crypto++:6.0.0
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cpe:2.3:a:cryptopp:crypto++:6.1.0
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cpe:2.3:a:cryptopp:crypto++:7.0.0
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cpe:2.3:a:cryptopp:crypto++:8.0.0
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cpe:2.3:a:cryptopp:crypto++:8.1.0
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cpe:2.3:a:cryptopp:crypto++:8.2.0
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cpe:2.3:a:cryptopp:crypto++:8.3.0
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cpe:2.3:a:cryptopp:crypto++:8.4.0
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cpe:2.3:a:cryptopp:crypto++:8.5.0
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cpe:2.3:a:cryptopp:crypto++:8.6.0