Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-3165 |
CWE-ID | CWE-798 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco NX-OS Operating systems & Components / Operating system Cisco Nexus 3000 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Nexus 9000 Series Switches NX-OS Mode Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU25655
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-3165
CWE-ID:
CWE-798 - Use of Hard-coded Credentials
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass MD5 authentication and establish a BGP connection with the device.
The vulnerability exists when the Border Gateway Protocol (BGP) Message Digest 5 (MD5) authentication is bypassed if the peer does not have MD5 authentication configured, the NX-OS device does have BGP MD5 authentication configured, and the NX-OS BGP virtual routing and forwarding (VRF) name is configured to be greater than 19 characters. A remote unauthenticated attacker can establish a BGP session with the NX-OS device without MD5 authentication.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco NX-OS: 9.2.1 - 9.3.1
Cisco Nexus 3000 Series Switches: All versions
Cisco Nexus 9000 Series Switches NX-OS Mode: All versions
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-bgpmd5
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.