CVE-2020-8867

Katalog CVE

CVSS 7.5 · High EPSS 2,6%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada opcfoundation unified architecture .net-standard. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. Was ZDI-CAN-10295.

Rincian

Terbit di NVD

22 April 2020

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:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-613: Insufficient Session Expiration

EPSS (30 hari)

2,6% peluang dieksploitasi; lebih tinggi dari 85,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf advisory vendor
• https://www.zerodayinitiative.com/advisories/ZDI-20-536/ advisory pihak ketiga · vdb entry