CVE Vulnerability

CVE-2021-43398

** DISPUTED ** 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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/weidai11/cryptopp/issues/1080 Exploit Third Party Advisory
https://cryptopp.com Vendor Advisory
https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222 Exploit Issue Tracking
Configurations

Configuration 1

cpe:2.3:a:cryptopp:crypto++:*:*:*:*:*:*:*:*
Information

Published : 2021-11-04 09:15

Updated : 2022-04-18 06:03

NVD link : CVE-2021-43398

Mitre link : CVE-2021-43398

Products Affected
No products.
CWE
CWE-203