CVE-2021-1567

Katalog CVE

CVSS 6.7 · Medium EPSS 0,18%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada cisco anyconnect secure mobility client. Skor CVSS 3.1 6.7 (Medium) menurut NVD.

Deskripsi (NVD)

A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client. This vulnerability is due to a race condition in the signature verification process for DLL files that are loaded on an affected device. An attacker could exploit this vulnerability by sending a series of crafted interprocess communication (IPC) messages to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.

Rincian

Terbit di NVD

16 Juni 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-427: Uncontrolled Search Path Element

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-pos-dll-ff8j6dFv advisory vendor