CVE-2018-0173

Katalog CVE

CVSS 8.6 · High KEV · sudah dieksploitasi EPSS 7,6%

Kerentanan Improper Input Validation pada cisco ios, cisco ios xe. Skor CVSS 3.1 8.6 (High) menurut NVD. Masuk katalog KEV CISA pada 3 Maret 2022, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device, which the device would then forward to a DHCPv4 server. When the affected software processes the option 82 information that is encapsulated in the response from the server, an error could occur. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvg62754.

Rincian

Terbit di NVD

28 Maret 2018

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

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-20: Improper Input Validation

EPSS (30 hari)

7,6% peluang dieksploitasi; lebih tinggi dari 94,4% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama

Cisco IOS and IOS XE Software Improper Input Validation Vulnerability

Masuk KEV

3 Maret 2022

Tenggat CISA

17 Maret 2022 (untuk instansi federal AS)

Ransomware

Belum tercatat

Tindakan wajib

Apply updates per vendor instructions.

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2 advisory vendor
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 advisory pihak ketiga · pemerintah AS
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 advisory pihak ketiga · pemerintah AS
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0173 pemerintah AS
• http://www.securityfocus.com/bid/103545 broken link · advisory pihak ketiga · vdb entry
• http://www.securitytracker.com/id/1040591 broken link · advisory pihak ketiga · vdb entry
• https://www.tenable.com/security/research/tra-2018-06 advisory pihak ketiga