CVE-2021-20319

Katalog CVE

CVSS 7.8 · High EPSS 0,52%

Kerentanan Improper Verification of Cryptographic Signature pada redhat coreos-installer. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.

Rincian

Terbit di NVD

4 Maret 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=2011862 issue tracking · advisory vendor
• https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89 patch · advisory pihak ketiga
• https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593 advisory pihak ketiga