CVE-2017-12234
Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.13% probability · 94th percentile
- CISA KEV
- Listed 3 March 2022 · due 24 March 2022
- Weakness
- CWE-20
- Affected
- cisco/ios
- Source
- psirt@cisco.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2017-12234
References
- http://www.securityfocus.com/bid/101038Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039459Broken Link, Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-cipVendor Advisory
- http://www.securityfocus.com/bid/101038Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039459Broken Link, Third Party Advisory, VDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-cipVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12234US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.