CVE-2021-34793

cisco adaptive security appliance, cisco secure firewall threat defense, cisco adaptive security appliance software +8 lainnya

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2021-34793

Katalog CVE

CVSS 8.6 · High EPSS 0,59%

Kerentanan Improper Enforcement of Message Integrity During Transmission in a Communication Channel pada cisco adaptive security appliance, cisco secure firewall threat defense +9 lainnya. Skor CVSS 3.1 8.6 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in transparent mode could allow an unauthenticated, remote attacker to poison MAC address tables, resulting in a denial of service (DoS) vulnerability. This vulnerability is due to incorrect handling of certain TCP segments when the affected device is operating in transparent mode. An attacker could exploit this vulnerability by sending a crafted TCP segment through an affected device. A successful exploit could allow the attacker to poison the MAC address tables in adjacent devices, resulting in network disruption.

Rincian

Terbit di NVD
27 Oktober 2021
Terakhir diubah
11 Agustus 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:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-924: Improper Enforcement of Message Integrity During Transmission in a Communication Channel
EPSS (30 hari)
0,59% peluang dieksploitasi; lebih tinggi dari 46,5% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
cisco adaptive security appliance Semua versi sebelum 9.8.4.40
cisco secure firewall threat defense Semua versi sebelum 6.4.0.13
cisco secure firewall threat defense Versi 6.5.0 hingga sebelum 6.6.5
cisco secure firewall threat defense Versi 6.7.0 hingga sebelum 6.7.0.3
cisco adaptive security appliance software Versi 9.9.0 hingga sebelum 9.12.4.29
cisco adaptive security appliance software Versi 9.13.0 hingga sebelum 9.14.3.9
cisco adaptive security appliance software Versi 9.15.0 hingga sebelum 9.15.1.17
cisco adaptive security appliance software Versi 9.16.0 hingga sebelum 9.16.2.3
cisco asa 5512-x firmware Versi 009.008(004.025)
cisco asa 5505 firmware Versi 009.008(004.025)
cisco asa 5515-x firmware Versi 009.008(004.025)
cisco asa 5525-x firmware Versi 009.008(004.025)
cisco asa 5545-x firmware Versi 009.008(004.025)
cisco asa 5555-x firmware Versi 009.008(004.025)
cisco asa 5580 firmware Versi 009.008(004.025)
cisco asa 5585-x firmware Versi 009.008(004.025)

> 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.