CVE-2021-40530

Katalog CVE

CVSS 5.9 · Medium EPSS 1,2%

Kerentanan Use of a Broken or Risky Cryptographic Algorithm pada cryptopp crypto++, fedoraproject fedora. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

The ElGamal implementation in Crypto++ through 8.5 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Rincian

Terbit di NVD

6 September 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-327: Use of a Broken or Risky Cryptographic Algorithm

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 66,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://eprint.iacr.org/2021/923 deskripsi teknis · advisory pihak ketiga
• https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1 advisory pihak ketiga
• https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2 exploit · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/57OJA2K5AHX5H...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HGVBZ2TTRKCTY...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJYOZGWI7TD27...