Auth bypass in Cisco Nexus 3000
CVE-2019-1603
A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to escalate lower-level privileges to the administrator level. The vulnerability is due to insufficient authorization enforcement. An attacker could exploit this vulnerability by authenticating to the targeted device and executing commands that could lead to elevated privileges. A successful exploit could allow an attacker to make configuration changes to the system as administrator. Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 9000 Series Switches-Standalone are affected in versions prior to 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco Nexus 3000
- Cisco Nexus 3000 Series Switches — versions unspecified
- Cisco Nexus 3500
- Cisco Nexus 3500 Platform Switches — versions unspecified
- Cisco Nexus 3600
- Cisco Nexus 3600 Platform Switches — versions unspecified
- Cisco Nexus 9000
- Cisco Nexus 9000 Series Switches-Standalone — versions unspecified
- Cisco Nexus 9500
- Cisco Nexus 9500 R-Series Line Cards And Fabric Modules — versions unspecified
Weakness classification (CWE)
References
- www.securityfocus.com/bid/107328 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-1603?
- CVE-2019-1603 is a high-severity vulnerability in Cisco Nexus 3000, classified under Improper Authorization. CVSS score: 7.8/10. Published 2019-03-08.
- How severe is CVE-2019-1603?
- High severity. CVSS v3 base score is 7.8 out of 10.