Vulnerability identifier: #VU25009
Vulnerability risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-787
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Cisco Nexus 3000 Series Switches
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Nexus 5500 Platform Switches
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Nexus 5600 Platform Switches
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Nexus 6000 Series Switches
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Nexus 9000 Series Switches in ACI Mode
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Cisco Nexus 9000 Series Switches NX-OS Mode
Hardware solutions /
Routers & switches, VoIP, GSM, etc
UCS 6200 Series Fabric Interconnects
Hardware solutions /
Routers & switches, VoIP, GSM, etc
UCS 6300 Series Fabric Interconnects
Hardware solutions /
Routers & switches, VoIP, GSM, etc
UCS 6400 Series Fabric Interconnects
Hardware solutions /
Routers & switches, VoIP, GSM, etc
Vendor: Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the Cisco Discovery Protocol parser for Cisco NX-OS does not properly validate input for certain fields in a Cisco Discovery Protocol message. A remote attacker on the local network can send a malicious Cisco Discovery Protocol packet to an affected device, trigger out-of-bounds write and execute arbitrary code on the target system.
Mitigation
Vulnerable software versions
Cisco Nexus 3000 Series Switches: 7.0.3 I - 9.2
Nexus 5500 Platform Switches: 7.1 - 7.3
Nexus 5600 Platform Switches: 7.1 - 7.3
Cisco Nexus 6000 Series Switches: 7.1 - 7.3
Cisco Nexus 9000 Series Switches in ACI Mode: 13.1 - 13.2
Cisco Nexus 9000 Series Switches NX-OS Mode: 7.0.3 F - 7.0.3 I
UCS 6200 Series Fabric Interconnects: 3.2 - 4.0
UCS 6300 Series Fabric Interconnects: 3.2 - 4.0
UCS 6400 Series Fabric Interconnects: 3.2 - 4.0
External links
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-nxos-cdp-rce
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.