Cisco · IOS software
CVE-2017-12233
Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability
What it is
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: CSCuz95334.
CISA: There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: March 24, 2022
More exploited flaws from Cisco
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Mar 3, 2022 | SNMP Remote Code Execution | IOS software | High 8.8 | 7.3% |
| Mar 3, 2022 | Integrated Services Module for VPN Denial-of-Service | IOS Software | High 7.5 | 7.1% |
| Mar 3, 2022 | Resource Management Errors | IOS Software | Medium 6.3 | 4.1% |
| Mar 3, 2022 | Denial-of-Service | IOS Software | Medium 6.8 | 4.9% |
| Mar 3, 2022 | Denial-of-Service | IOS Software | Medium 6.8 | 4.9% |
| Mar 3, 2022 | Network Address Translation Denial-of-Service | IOS software | High 7.5 | 7.1% |
| Mar 3, 2022 | for Cisco Integrated Services Routers Denial-of-Service | IOS software | Medium 6.5 | 2.2% |
| Mar 3, 2022 | Common Industrial Protocol Request Denial-of-Service | IOS software | High 7.5 | 7.1% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.