Vulnerability identifier: #VU51721
Vulnerability risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Cisco Aironet 1540 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Aironet 1560 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Aironet 1800 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Aironet 2800 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Aironet 3800 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco 4800 Aironet Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Catalyst 9100
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Catalyst IW 6300
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Integrated AP on 1100 Integrated Services Routers
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco ESW6300 Series Access Points
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the multicast DNS (mDNS) gateway feature. A remote attacker on the local network can send a specially crafted mDNS packet, trigger memory corruption and cause a denial of service condition on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Cisco Aironet 1540 Series Access Points: 17.2 - 17.4
Cisco Aironet 1560 Series Access Points: 17.2 - 17.4
Cisco Aironet 1800 Series Access Points: 17.2 - 17.4
Cisco Aironet 2800 Series Access Points: 17.2 - 17.4
Cisco Aironet 3800 Series Access Points: 17.2 - 17.4
Cisco 4800 Aironet Access Points: 17.2 - 17.4
Cisco Catalyst 9100: 17.2 - 17.4
Cisco Catalyst IW 6300: 17.2 - 17.4
Integrated AP on 1100 Integrated Services Routers: 17.2 - 17.4
Cisco ESW6300 Series Access Points: 17.2 - 17.4
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-mdns-dos-E6Kw...
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.