Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU46108
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-3454
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation of specific Call Home configuration parameters when the software is configured for transport method HTTP. A remote administrator can modify parameters within the Call Home configuration and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco NX-OS: All versions
Cisco MDS 9000 Series Multilayer Switches: 8.2.1
Cisco Nexus 3000 Series Switches: 7.0.0 HSK.0.357 - 8.1.1 S5
Cisco Nexus 3600 Platform Switches: 7.0.3 FR.1.24
Cisco Nexus 5500 Series Switches: 7.0.0 HSK.0.357
Cisco Nexus 5600 Series Switches: 7.0.0 HSK.0.357
Cisco Nexus 6000 Series Switches: 7.0.0 HSK.0.357
Cisco Nexus 7000 Series Switches: 8.1.1
Cisco Nexus 9000 Series Switches NX-OS Mode: 7.0.0 HSK.0.357 - 8.1.1 S5
Cisco Nexus 9500 R-Series: 7.0.3 FR.1.24
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.