csirt@kutim:~/threat-intel/cve/CVE-2021-34749

Katalog CVE

CVSS 8.6 · High EPSS 1,7%

Kerentanan Exposure of Sensitive Information to an Unauthorized Actor pada cisco ironport web security appliance, cisco secure firewall management center +1 lainnya. Skor CVSS 3.1 8.6 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in Server Name Identification (SNI) request filtering of Cisco Web Security Appliance (WSA), Cisco Firepower Threat Defense (FTD), and the Snort detection engine could allow an unauthenticated, remote attacker to bypass filtering technology on an affected device and exfiltrate data from a compromised host. This vulnerability is due to inadequate filtering of the SSL handshake. An attacker could exploit this vulnerability by using data from the SSL client hello packet to communicate with an external server. A successful exploit could allow the attacker to execute a command-and-control attack on a compromised host and perform additional data exfiltration attacks.

Rincian

Terbit di NVD
18 Agustus 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
8.6 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
EPSS (30 hari)
1,7% peluang dieksploitasi; lebih tinggi dari 76,3% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
cisco ironport web security appliance Versi 14.5
cisco secure firewall management center Versi 2.9.18
cisco firepower management center virtual appliance firmware Versi 6.6.0
cisco firepower management center virtual appliance firmware Versi 6.7.0
cisco firepower management center virtual appliance firmware Versi 7.0.0
cisco firepower management center virtual appliance firmware Versi 7.1.0

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.