VulnerabilityModified

CVE-2017-3850

MEDIUM 5.9EPSS 2.49%

Does this matter?

Lower severity and a low EPSS score (2.49%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.0: 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 2.49% probability · 84th percentile
CISA KEV: Not listed
Weakness: CWE-20
Affected: cisco/ios · cisco/ios xe
Source: psirt@cisco.com

References

http://www.securityfocus.com/bid/96971Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038065Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6Mitigation, Vendor Advisory
http://www.securityfocus.com/bid/96971Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038065Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-aniipv6Mitigation, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.