CVE-2021-43398

Katalog CVE

CVSS 5.3 · Medium EPSS 2,0%

Kerentanan Observable Discrepancy pada cryptopp crypto++. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

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

Rincian

Terbit di NVD

4 November 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-203: Observable Discrepancy

EPSS (30 hari)

2,0% peluang dieksploitasi; lebih tinggi dari 79,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cryptopp.com advisory vendor
• https://github.com/weidai11/cryptopp/issues/1080 exploit · advisory pihak ketiga
• https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222 exploit · issue tracking · advisory pihak ketiga