CVE-2020-3408

Katalog CVE

CVSS 8.6 · High EPSS 1,6%

Kerentanan Incorrect Regular Expression pada cisco ios, cisco ios xe. Skor CVSS 3.1 8.6 (High) menurut NVD.

Deskripsi (NVD)

A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability occurs because the regular expression (regex) engine that is used with the Split DNS feature of affected releases may time out when it processes the DNS name list configuration. An attacker could exploit this vulnerability by trying to resolve an address or hostname that the affected device handles. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Rincian

Terbit di NVD

24 September 2020

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:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-185: Incorrect Regular Expression
CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

1,6% peluang dieksploitasi; lebih tinggi dari 74,5% 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-splitdns-SPWqpdGW advisory vendor