Vulnerability Details CVE-2019-14318
Crypto++ 8.3.0 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because scalar multiplication in ecp.cpp (prime field curves, small leakage) and algebra.cpp (binary field curves, large leakage) is not constant time and leaks the bit length of the scalar among other information.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.024
EPSS Ranking 84.2%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00066.html
- http://www.openwall.com/lists/oss-security/2019/10/02/2
- https://eprint.iacr.org/2011/232.pdf
- https://github.com/weidai11/cryptopp/issues/869
- https://minerva.crocs.fi.muni.cz/
- https://tches.iacr.org/index.php/TCHES/article/view/7337
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00066.html
- http://www.openwall.com/lists/oss-security/2019/10/02/2
- https://eprint.iacr.org/2011/232.pdf
- https://github.com/weidai11/cryptopp/issues/869
- https://minerva.crocs.fi.muni.cz/
- https://tches.iacr.org/index.php/TCHES/article/view/7337
Products affected by CVE-2019-14318
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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