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6.5Medium KEV

CVE-2017-12232Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability

Cisco IOS Published: (9 years ago)

Known exploited — Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability

CISA confirmed this vulnerability is used in real attacks on 03.03.2022. Remediation deadline for US federal agencies: 24.03.2022.

Required action: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2017-12232

Description

A vulnerability in the implementation of a protocol in Cisco Integrated Services Routers Generation 2 (ISR G2) Routers running Cisco IOS 15.0 through 15.6 could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a misclassification of Ethernet frames. An attacker could exploit this vulnerability by sending a crafted Ethernet frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvc03809.

Weakness (CWE): CWE-399

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
cisco ios 15.0 – ≤ 15.6
— Cisco IOS Cisco IOS

References and patches

CPE matches (NVD) (1)
  • cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* ≥ 15.0 ≤ 15.6

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