Denial of service in Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-20684 |
| CWE-ID | CWE-190 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software |
Cisco IOS XE Operating systems & Components / Operating system Catalyst 9800 Embedded Wireless Controller Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9300 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9400 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9500 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800 Series Wireless Controllers Hardware solutions / Routers & switches, VoIP, GSM, etc Catalyst 9800-CL Wireless Controllers for Cloud Hardware solutions / Routers & switches, VoIP, GSM, etc Embedded Wireless Controller on Catalyst Access Points Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Integer overflow
EUVDB-ID: #VU62323
Risk: Low
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-20684
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow in Simple Network Management Protocol (SNMP) trap generation for wireless clients. A remote attacker on the local network can pass specially crafted data to the application, trigger integer overflow and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: 16.12
Catalyst 9800 Embedded Wireless Controller: All versions
Catalyst 9300 Series Switches: All versions
Catalyst 9400 Series Switches: All versions
Catalyst 9500 Series Switches: All versions
Catalyst 9800 Series Wireless Controllers: All versions
Catalyst 9800-CL Wireless Controllers for Cloud: All versions
Embedded Wireless Controller on Catalyst Access Points: All versions
CPE2.3- cpe:2.3:o:cisco_systems:cisco_ios_xe:16.12:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9800_embedded_wireless_controller:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9300_series_switches:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9400_series_switches:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9500_series_switches:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9800_series_wireless_controllers:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:catalyst_9800-cl_wireless_controllers_for_cloud:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:embedded_wireless_controller_on_catalyst_access_points:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
