CVE-2017-6627: Cisco IOS and Cisco IOS XE vulnerability

1. In CISA KEVCISA KEV catalogue3 Mar 2022
2. Exploited (reported): not seen
3. Scanning observed: not seen
4. Proof of concept public: not seen
5. Not established: not seen

DescriptionCVE.org

A vulnerability in the UDP processing code of Cisco IOS 15.1, 15.2, and 15.4 and IOS XE 3.14 through 3.18 could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and a denial of service (DoS) condition. The vulnerability is due to Cisco IOS Software application changes that create UDP sockets and leave the sockets idle without closing them. An attacker could exploit this vulnerability by sending UDP packets with a destination port of 0 to an affected device. A successful exploit could allow the attacker to cause UDP packets to be held in the input interfaces queue, resulting in a DoS condition. The input interface queue will stop holding UDP packets when it receives 250 packets. Cisco Bug IDs: CSCup10024, CSCva55744, CSCva95506.

• Cisco IOS and Cisco IOS XECisco IOS and Cisco IOS XE

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.

CISA KEV

Listed since 3 Mar 2022 · catalogue entry

Public check

No public nuclei template

Weakness

Resource Management Errors · Denial of Service

Vendor

Cisco

Published

September 2017

Band

Exploited in the wild, September 2017

1. 3 Mar 2022
   CISA added it to the KEV catalogue CISA

• NVD entrynvd.nist.gov
• CISA KEV cataloguecisa.gov
• CVE recordcve.org
• Weakness CWE-399cwe.mitre.org
• securityfocus.com/bid/100644securityfocus.com
• securitytracker.com/id/1039289securitytracker.com
• tools.cisco.com/security/center/content/CiscoSecurityAdvisory/citools.cisco.com