Auth bypass in Cisco 5100 Enterprise Network Compute System
CVE-2018-0362
A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user. The vulnerability is due to improper security restrictions that are imposed by the affected system. An attacker could exploit this vulnerability by submitting an empty password value to an affected device's BIOS authentication prompt. An exploit could allow the attacker to have access to a restricted set of user-level BIOS commands. Cisco Bug IDs: CSCvh83260.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (27.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cisco 5100 Enterprise Network Compute System
- Cisco 5100 Enterprise Network Compute System Firmware — versions 3.2\(3\), 3.2(3)
- Cisco 5400 Enterprise Network Compute System
- Cisco 5400 Enterprise Network Compute System Firmware — versions 3.2\(3\), 3.2(3)
- Cisco Ucs-E1120d-K9
- Cisco Ucs-E1120d-K9 Firmware — versions 3.2\(3\), 3.2(3)
- Cisco Ucs-E1120d-M3
- Cisco Ucs-E1120d-M3 Firmware — versions 3.2\(3\), 3.2(3)
- Cisco Ucs-E140d-K9
- Cisco Ucs-E140d-K9 Firmware — versions 3.2\(3\), 3.2(3)
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620… (Vendor Advisory)
- www.securitytracker.com/id/1041173 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-0362?
- CVE-2018-0362 is a medium-severity vulnerability in Cisco 5100 Enterprise Network Compute System, classified under Improper Authentication. CVSS score: 4.3/10. Published 2018-06-21.
- How severe is CVE-2018-0362?
- Medium severity. CVSS v3 base score is 4.3 out of 10.