VDB-98333 · CVE-2017-3849 · BID 96972

Cisco IOS/IOS XE ANI Packet input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Cisco IOS and IOS XE (Router Operating System) (the affected version is unknown). It has been rated as critical. This issue affects an unknown code of the component ANI Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability.

The bug was discovered 03/20/2017. The weakness was presented 03/20/2017 by Omar Eissa as cisco-sa-20170320-ani as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The public release was coordinated in cooperation with Cisco. The identification of this vulnerability is CVE-2017-3849 since 12/21/2016. The attack needs to be initiated within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 97943 (Cisco IOS ANI Registrar DoS (cisco-sa-20170320-ani)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (97943). See 98334 for similar entry.






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.4
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Cisco): 7.4
Vendor Vector (Cisco): 🔍

NVD Base Score: 7.4
NVD Vector: 🔍



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Class: Input validation
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

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Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 97943
Nessus Name: Cisco IOS ANI Registrar DoS (cisco-sa-20170320-ani)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XE Software Autonomic Networking Infrastructure Registrar Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍


12/21/2016 🔍
03/20/2017 +89 days 🔍
03/20/2017 +0 days 🔍
03/20/2017 +0 days 🔍
03/20/2017 +0 days 🔍
03/20/2017 +0 days 🔍
03/21/2017 +1 days 🔍
03/21/2017 +0 days 🔍
03/24/2017 +3 days 🔍
11/14/2022 +2061 days 🔍


Vendor: cisco.com

Advisory: cisco-sa-20170320-ani
Researcher: Omar Eissa
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2017-3849 (🔍)

SecurityTracker: 1038064
SecurityFocus: 96972 - Cisco IOS and IOS XE Software CVE-2017-3849 Denial of Service Vulnerability
OSVDB: - CVE-2017-3849 - Cisco - Multiple Products - Denial of Service Issue

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍


Created: 03/21/2017 10:51 AM
Updated: 11/14/2022 09:58 AM
Changes: 03/21/2017 10:51 AM (87), 09/10/2020 04:40 PM (7), 11/14/2022 09:58 AM (4)
Complete: 🔍


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