CVE-2017-12234
CVE-2017-12234
Vexday Risk Score
51Attention
SSVC decision (CISA)
Act
Exploitation + impact → act immediately
CVSS 7.5EPSS 6.9%KEV simPoC —Nuclei —Metasploit —Patch —
Lifecycle
28 Sep 2017Published on NVD
03 Mar 2022Active exploitation (CISA KEV)
Recommendation: Patch as soon as possible — active exploitation confirmed.
In short
Cisco IOS devices running versions 12.4 to 15.6 can crash when they receive specially crafted network packets using the Common Industrial Protocol (CIP). An attacker can remotely send these malicious packets to knock the device offline without needing to log in.
Technical detail
The vulnerability exists in improper parsing of CIP packets in Cisco IOS 12.4-15.6, allowing unauthenticated remote attackers to trigger a denial of service by crafting CIP packets that cause device reload. The attack vector is network-based with no authentication or user interaction required; successful exploitation results in loss of availability.
Summary generated and translated by AI from the official description.
Multiple vulnerabilities in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of crafted CIP packets destined to an affected device. An attacker could exploit these vulnerabilities by sending crafted CIP packets to be processed by 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: CSCvc43709.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
n/a · Cisco IOSWant to know if your infrastructure is exposed to this?
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