Cisco Wireless LAN Controller 8.2.121.0/8.3.102.0 IPv6 UDP Ingress input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Cisco Wireless LAN Controller 8.2.121.0/8.3.102.0. This issue affects some unknown processing of the component IPv6 UDP Ingress Handler. Such manipulation leads to input validation. This vulnerability is documented as CVE-2016-9219. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Cisco Wireless LAN Controller 8.2.121.0/8.3.102.0 (Wireless LAN Software) and classified as problematic. Affected by this issue is an unknown code block of the component IPv6 UDP Ingress 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. CVE summarizes:

A vulnerability with IPv6 UDP ingress packet processing in Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to cause an unexpected reload of the device. The vulnerability is due to incomplete IPv6 UDP header validation. An attacker could exploit this vulnerability by sending a crafted IPv6 UDP packet to a specific port on the targeted device. An exploit could allow the attacker to impact the availability of the device as it could unexpectedly reload. This vulnerability affects Cisco Wireless LAN Controller (WLC) running software version 8.2.121.0 or 8.3.102.0. Cisco Bug IDs: CSCva98592.

The bug was discovered 04/05/2017. The weakness was released 04/06/2017 with Cisco as cisco-sa-20170405-wlc2 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is handled as CVE-2016-9219 since 11/06/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 99473 (Cisco Wireless LAN Controller IPv6 UDP Packet Handling DoS (cisco-sa-20170405-wlc2)), 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 c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38675 (Cisco Wireless LAN Controller IPv6 UDP Denial of Service Vulnerability (cisco-sa-20170405-wlc2)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99473) and SecurityFocus (BID 97423†). Entries connected to this vulnerability are available at VDB-99357 and VDB-99355. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99473
Nessus Name: Cisco Wireless LAN Controller IPv6 UDP Packet Handling DoS (cisco-sa-20170405-wlc2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803167
OpenVAS Name: Cisco Wireless LAN Controller IPv6 UDP Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/06/2016 🔍
04/04/2017 +149 days 🔍
04/05/2017 +1 days 🔍
04/05/2017 +0 days 🔍
04/06/2017 +1 days 🔍
04/06/2017 +0 days 🔍
04/07/2017 +1 days 🔍
04/19/2017 +12 days 🔍
11/27/2022 +2048 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170405-wlc2
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9219 (🔍)
GCVE (CVE): GCVE-0-2016-9219
GCVE (VulDB): GCVE-100-99356
SecurityFocus: 97423 - Cisco Wireless LAN Controller CVE-2016-9219 Denial of Service Vulnerability
OSVDB: - CVE-2016-9219 - Cisco - WLC - Denial of Service Issue
SecurityTracker: 1038183

See also: 🔍

Entryinfo

Created: 04/07/2017 09:07
Updated: 11/27/2022 09:25
Changes: 04/07/2017 09:07 (74), 08/26/2020 15:02 (8), 11/27/2022 09:25 (4)
Complete: 🔍
Cache ID: 216:AEA:103

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