CVE-2021-28098

Katalog CVE

CVSS 7.8 · High EPSS 0,41%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada forescout counteract. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Forescout CounterACT before 8.1.4. A local privilege escalation vulnerability is present in the logging function. SecureConnector runs with administrative privileges and writes logs entries to a file in %PROGRAMDATA%\ForeScout SecureConnector\ that has full permissions for the Everyone group. Using a symbolic link allows an attacker to point the log file to a privileged location such as %WINDIR%\System32. The resulting log file adopts the file permissions of the source of the symbolic link (in this case, the Everyone group). The log file in System32 can be replaced and renamed with a malicious DLL for DLL hijacking.

Rincian

Terbit di NVD

14 April 2021

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-59: Improper Link Resolution Before File Access ('Link Following')
CWE-427: Uncontrolled Search Path Element
CWE-732: Incorrect Permission Assignment for Critical Resource

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://docs.forescout.com advisory vendor
• https://jordanpotti.com/2021/03/30/forescout-priv-esc-folder-permissions/ exploit · advisory pihak ketiga
• https://www.adversis.io/research/2021/3/30/forescout-secure-connector-local-privilege-escalation exploit · advisory pihak ketiga