CVE-2021-43398
- Source
- https://cve.org/CVERecord?id=CVE-2021-43398
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43398.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-43398
- Published
- 2021-11-04T21:15:09.520Z
- Modified
- 2026-07-09T01:07:57.186531Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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
- References
Affected packages
Git / github.com/weidai11/cryptopp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/weidai11/cryptopp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
-
Show details
{ "cpe": "cpe:2.3:a:cryptopp:crypto\\+\\+:*:*:*:*:*:*:*:*", "source": "CPE_RANGE", "extracted_events": [ { "introduced": "0" }, { "last_affected": "8.6.0" } ] }
Affected versions
Other
CRYPTOPP_5_0
CRYPTOPP_5_1
CRYPTOPP_5_2
CRYPTOPP_5_2_1
CRYPTOPP_5_2_3
CRYPTOPP_5_3_0
CRYPTOPP_5_4
CRYPTOPP_5_5
CRYPTOPP_5_5_1
CRYPTOPP_5_5_2
CRYPTOPP_5_6_0
CRYPTOPP_5_6_1
CRYPTOPP_5_6_2
CRYPTOPP_5_6_3
CRYPTOPP_5_6_4
CRYPTOPP_5_6_5
CRYPTOPP_6_0_0
CRYPTOPP_7_0_0
CRYPTOPP_8_0_0
CRYPTOPP_8_1_0
CRYPTOPP_8_2_0
CRYPTOPP_8_3_0
CRYPTOPP_8_4_0
CRYPTOPP_8_5_0
CRYPTOPP_8_6_0