Cisco Mobility Express 2800/Mobility Express 3800 8.2(121.12)/8.4(1.82) 802.11 Ingress Connection Authentication resource management

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cisco Mobility Express 2800 and Mobility Express 3800 8.2(121.12)/8.4(1.82) and classified as problematic. Affected by this issue is some unknown functionality of the component 802.11 Ingress Connection Authentication Handler. The manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2016-9221. The attack can only be initiated within the local network. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco Mobility Express 2800 and Mobility Express 3800 8.2(121.12)/8.4(1.82). This issue affects an unknown part of the component 802.11 Ingress Connection Authentication Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

A Denial of Service Vulnerability in 802.11 ingress connection authentication handling for the Cisco Mobility Express 2800 and 3800 Access Points (APs) could allow an unauthenticated, adjacent attacker to cause authentication to fail. Affected Products: This vulnerability affects Cisco Mobility Express 2800 Series and 3800 Series Access Points when configured in local mode in 40 MHz. More Information: CSCvb33575. Known Affected Releases: 8.2(121.12) 8.4(1.82). Known Fixed Releases: 8.2(131.2) 8.2(131.3) 8.2(131.4) 8.2(141.0) 8.3(104.53) 8.3(104.54) 8.4(1.80) 8.4(1.85).

The bug was discovered 01/18/2017. The weakness was disclosed 01/26/2017 with Cisco as CSCvb33575 as confirmed advisory (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-2016-9221 since 11/06/2016. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 8.2(131.2), 8.2(131.3), 8.2(131.4), 8.2(141.0), 8.3(104.53), 8.3(104.54), 8.4(1.80) or 8.4(1.85) eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 95631†). The entry VDB-95986 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

OpenVAS ID: 800316
OpenVAS Name: Cisco Mobility Express 2800 and 3800 802.11 Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mobility Express 2800/Mobility Express 3800 8.2(131.2)/8.2(131.3)/8.2(131.4)/8.2(141.0)/8.3(104.53)/8.3(104.54)/8.4(1.80)/8.4(1.85)

Timelineinfo

11/06/2016 🔍
01/18/2017 +73 days 🔍
01/18/2017 +0 days 🔍
01/26/2017 +8 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
05/14/2026 +3395 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCvb33575⛔
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9221 (🔍)
GCVE (CVE): GCVE-0-2016-9221
GCVE (VulDB): GCVE-100-95987
SecurityFocus: 95631 - Cisco Mobility Express 2800 and 3800 Access Points CVE-2016-9221 Denial of Service Vulnerability
OSVDB: - CVE-2016-9221 - Cisco - Multiple Products - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 01/26/2017 14:57
Updated: 05/14/2026 21:10
Changes: 01/26/2017 14:57 (66), 08/02/2020 08:57 (7), 05/14/2026 21:10 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!