CVE-2017-3850

Description

A vulnerability in the Autonomic Networking Infrastructure (ANI) feature of Cisco IOS Software (15.4 through 15.6) and Cisco IOS XE Software (3.7 through 3.18, and 16) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incomplete input validation on certain crafted packets. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to a device that is running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature. A device must meet two conditions to be affected by this vulnerability: (1) the device must be running a version of Cisco IOS Software or Cisco IOS XE Software that supports ANI (regardless of whether ANI is configured); and (2) the device must have a reachable IPv6 interface. An exploit could allow the attacker to cause the affected device to reload. Cisco Bug IDs: CSCvc42729.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.40%
Vendor Advisory cisco.com
Affected: n/a Cisco IOS and IOS XE
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6 mitigation vendor advisory
http://www.securitytracker.com/id/1038065 third party advisory vdb entry
http://www.securityfocus.com/bid/96971 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2017-3850?
CVE-2017-3850 has been scored as a medium severity vulnerability.
How to fix CVE-2017-3850?
To fix CVE-2017-3850, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-3850 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-3850 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-3850?
CVE-2017-3850 affects n/a Cisco IOS and IOS XE.
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