Vulnerability in Cryptopp Crypto\+\+
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. Th…
EPSS: 0.019 (77.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Cryptopp Crypto\+\+
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2021-43398?
- CVE-2021-43398 is a medium-severity vulnerability in Cryptopp Crypto\+\+, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2021-11-04.
- How severe is CVE-2021-43398?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-43398 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.