Cisco Wireless LAN Controller up to 8.2/8.5/8.8 IAPP Message resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.0 | $0-$5k | 0.00 |
A vulnerability was found in Cisco Wireless LAN Controller up to 8.2/8.5/8.8 (Wireless LAN Software). It has been declared as problematic. Affected by this vulnerability is an unknown part of the component IAPP Message Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:
A vulnerability in the handling of Inter-Access Point Protocol (IAPP) messages by Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition. The vulnerability exist because the software improperly validates input on fields within IAPP messages. An attacker could exploit the vulnerability by sending malicious IAPP messages to an affected device. A successful exploit could allow the attacker to cause the Cisco WLC Software to reload, resulting in a DoS condition. Software versions prior to 8.2.170.0, 8.5.150.0, and 8.8.100.0 are affected.
The bug was discovered 04/17/2019. The weakness was released 04/18/2019 with Cisco as cisco-sa-20190417-wlc-iapp as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2019-1796 since 12/06/2018. The attack needs to be done within the local network. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316410 (Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities(cisco-sa-20190417-wlc-iapp)).
Upgrading to version 8.2.170.0, 8.5.150.0 or 8.8.100.0 eliminates this vulnerability.
Entries connected to this vulnerability are available at 133803 and 133804.
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.1VulDB Meta Temp Score: 6.0
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CNA Base Score: 7.4
CNA Vector (Cisco Systems, Inc.): 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Wireless LAN Controller 8.2.170.0/8.5.150.0/8.8.100.0
Timeline
12/06/2018 🔍04/17/2019 🔍
04/17/2019 🔍
04/18/2019 🔍
04/18/2019 🔍
09/04/2023 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-20190417-wlc-iapp
Organization: Cisco
Status: Confirmed
CVE: CVE-2019-1796 (🔍)
SecurityFocus: 108008 - Cisco Wireless LAN Controller IAPP Message Handling Multiple Denial of Service Vulnerabilities
See also: 🔍
Entry
Created: 04/18/2019 20:23Updated: 09/04/2023 14:14
Changes: 04/18/2019 20:23 (65), 05/30/2020 16:21 (4), 09/04/2023 14:14 (14)
Complete: 🔍
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