CVE-2021-27217

Katalog CVE

CVSS 4.4 · Medium EPSS 1,6%

Kerentanan Out-of-bounds Read pada yubico yubihsm-shell. Skor CVSS 3.1 4.4 (Medium) menurut NVD.

Deskripsi (NVD)

An issue was discovered in the _send_secure_msg() function of Yubico yubihsm-shell through 2.0.3. The function does not correctly validate the embedded length field of an authenticated message received from the device. Out-of-bounds reads performed by aes_remove_padding() can crash the running process, depending on the memory layout. This could be used by an attacker to cause a client-side denial of service. The yubihsm-shell project is included in the YubiHSM 2 SDK product.

Rincian

Terbit di NVD

4 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

1,6% peluang dieksploitasi; lebih tinggi dari 75,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.yubico.com/support/security-advisories/ysa-2021-01/ advisory vendor
• https://blog.inhq.net/posts/yubico-libyubihsm-vuln2 exploit · advisory pihak ketiga
• https://github.com/Yubico/yubihsm-shell/releases release notes · advisory pihak ketiga