A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of incoming mDNS traffic. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device through a wireless network that is configured in FlexConnect local switching mode or through a wired network on a configured mDNS VLAN. A successful exploit could allow the attacker to cause the access point (AP) to reboot, resulting in a DoS condition.

Project Subscriptions

Vendors Products
1100 Integrated Services Router Subscribe
Aironet 1540 Subscribe
Aironet 1560 Subscribe
Aironet 1800 Subscribe
Aironet 2800 Subscribe
Aironet 3800 Subscribe
Aironet 4800 Subscribe
Aironet Access Point Software Subscribe
Catalyst 9100 Subscribe
Catalyst 9800 Subscribe
Catalyst 9800 Firmware Subscribe
Catalyst Iw6300 Subscribe
Esw6300 Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2021-6906 A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of incoming mDNS traffic. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device through a wireless network that is configured in FlexConnect local switching mode or through a wired network on a configured mDNS VLAN. A successful exploit could allow the attacker to cause the access point (AP) to reboot, resulting in a DoS condition.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 09 Nov 2024 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-08T23:35:37.324Z

Reserved: 2020-11-13T00:00:00

Link: CVE-2021-1439

cve-icon Vulnrichment

Updated: 2024-08-03T16:11:17.298Z

cve-icon NVD

Status : Modified

Published: 2021-03-24T20:15:14.977

Modified: 2024-11-21T05:44:22.010

Link: CVE-2021-1439

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses