CVE-2021-33560

Katalog CVE

CVSS 7.5 · High EPSS 2,3%

Kerentanan Observable Discrepancy pada gnupg libgcrypt, debian linux +6 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

Rincian

Terbit di NVD

8 Juni 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-203: Observable Discrepancy
CWE-325: Missing Cryptographic Step

EPSS (30 hari)

2,3% peluang dieksploitasi; lebih tinggi dari 83,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://dev.gnupg.org/T5305 release notes · advisory vendor
• https://dev.gnupg.org/T5328 advisory vendor
• https://dev.gnupg.org/T5466 release notes · advisory vendor
• https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61 patch · advisory vendor
• https://www.oracle.com/security-alerts/cpuapr2022.html patch · advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpujan2022.html patch · advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpujul2022.html patch · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202210-13 advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpuoct2021.html advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VL...