PT-2017-16144 · Cisco · Cisco Ios+1

Published 2017-03-20 · Updated 2017-07-12 · CVE-2017-3849

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS Software versions 15.2 through 15.6 Cisco IOS XE Software versions 3.7 through 3.18, and 16

Description A vulnerability in the Autonomic Networking Infrastructure (ANI) registrar feature could allow an unauthenticated, adjacent 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 autonomic network channel discovery packet to a device that has all the following characteristics: (1) running a Cisco IOS Software or Cisco IOS XE Software release that supports the ANI feature; (2) configured as an autonomic registrar; (3) has a whitelist configured. An exploit could allow the attacker to cause the affected device to reload.

Recommendations For Cisco IOS Software versions 15.2 through 15.6, update to a fixed release. For Cisco IOS XE Software versions 3.7 through 3.18, and 16, update to a fixed release. As a general mitigation measure, ensure that autonomic networking is configured with a whitelist and do not remove the whitelist as a workaround.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2017-3849

Affected Products

Cisco Ios

Cisco Ios Xe

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170320-ani · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-3849 · Security Note
• https://osv.dev/vulnerability/CVE-2017-3849 · Vendor Advisory
• http://securityfocus.com/bid/96972 · Note
• http://securitytracker.com/id/1038064 · Note