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CVE-2017-3849

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
21/03/2017
Last modified:
20/04/2025

Description

A vulnerability in the Autonomic Networking Infrastructure (ANI) registrar feature of Cisco IOS Software (possibly 15.2 through 15.6) and Cisco IOS XE Software (possibly 3.7 through 3.18, and 16) 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. Note: Autonomic networking should be configured with a whitelist. Do not remove the whitelist as a workaround. Cisco Bug IDs: CSCvc42717.

Impact

Vector 3.x
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.40
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.10 MEDIUM
Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
6.10
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:15.2\(3\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(3\)e1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(3\)e2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(3\)e3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)e1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)e2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)e3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5\)e1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5a\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5b\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)s1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)s2:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools