CVE-2017-6663 Cisco IOS Software and Cisco IOS XE Software Denial-of-Service
An unauthenticated adjacent attacker can cause autonomic nodes to reload, resulting in a denial of service condition.
- Exploited in the wild
- Since 3 Mar 2022
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6663?
CVE-2017-6663 is a medium-severity denial of service vulnerability in Cisco Ios, published on 7 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause autonomic nodes of an affected system to reload, resulting in a denial of service (DoS) condition. More Information: CSCvd88936. Known Affected Releases: Denali-16.2.1 Denali-16.3.1.
Which versions are affected by CVE-2017-6663?
It affects 2 products.
Products include Cisco Ios, Cisco Ios Xe.
How do I fix CVE-2017-6663?
No fix has been published for CVE-2017-6663 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 24 Mar 2022.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-6663 being exploited?
Yes. Attackers have exploited CVE-2017-6663 in the wild since at least 3 Mar 2022.
Other vulnerabilities in Cisco Ios
- CVE-2017-12240 Cisco IOS and IOS XE Software DHCP Remote Code Execution
- CVE-2017-3881 Cisco IOS and IOS XE Remote Code Execution
- CVE-2018-0167 Cisco IOS, XR, and XE Software Buffer Overflow
- CVE-2017-6736 Cisco IOS and IOS XE Software SNMP Remote Code Execution
- CVE-2017-6737 Cisco IOS and IOS XE Software SNMP Remote Code Execution
Sources
Also known as GHSA-3h3r-w377-6ffg.