Vulnerability identifier: #VU56859
Vulnerability risk: Medium
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-670
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Cisco IOS XE
Operating systems & Components /
Operating system
Cisco Catalyst 9800 Wireless Controller
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Catalyst 9800 Wireless Controllers for Cloud
Other software /
Other software solutions
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of servide (DoS) attack.
The vulnerability exists due to a logic error when processing specific link-local IPv6 traffic. A remote attacker on the local network can send a specially crafted IPv6 packet and cause a denial of service condition on the target system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Cisco IOS XE: All versions
Cisco Catalyst 9800 Wireless Controller: All versions
Catalyst 9800 Wireless Controllers for Cloud: All versions
External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-ipv6-dos-NMYeCnZv
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.