Arbitrary file upload in Cisco Nx-Os
CVE-2017-12332
A vulnerability in Cisco NX-OS System Software patch installation could allow an authenticated, local attacker to write a file to arbitrary locations. The vulnerability is due to insufficient restrictions in the patch installation process. An attacker could exploit this vulnerability by installing a crafted patch image on an affected device. The vulnerable operation occurs prior to patch activation. An exploit could allow the attacker to write arbitrary files on an affected system as root. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 2000 Series Fabric Extenders, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16513, CSCvf23794, CSCvf23832.
Vulnerability class: Unrestricted File Upload
EPSS: 0.003 (25.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Cisco Nx-os — versions 8.1\(0\)bd\(0.20\), 8.1\(1\)
- Cisco Unified_computing_system — versions 7.0\(0\)hsk\(0.357\)
- N/a Cisco Nx-os — versions Cisco NX-OS
Weakness classification (CWE)
References
- psirt@cisco.com (vdb-entry, x_refsource_BID)
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2017-12332?
- CVE-2017-12332 is a medium-severity vulnerability in Cisco Nx-Os, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 4.4/10. Published 2017-11-30.
- How severe is CVE-2017-12332?
- Medium severity. CVSS v3 base score is 4.4 out of 10.