Auth bypass in Cisco Nexus 3000
CVE-2019-1604
A vulnerability in the user account management interface of Cisco NX-OS Software could allow an authenticated, local attacker to gain elevated privileges on an affected device. The vulnerability is due to an incorrect authorization check of user accounts and their associated Group ID (GID). An attacker could exploit this vulnerability by taking advantage of a logic error that will permit the use of higher privileged commands than what is necessarily assigned. A successful exploit could allow an attacker to execute commands with elevated privileges on the underlying Linux shell of an affected device. Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22), 8.2(3), and 8.3(2). 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: 0.004 (35.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.3% 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 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 7000
- Cisco Nexus 7000 And 7700 Series Switches — versions unspecified, unspecified, unspecified
- Cisco Nexus 7700
- Cisco Nexus 9000
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306… (vendor-advisory, Patch, Vendor Advisory)
- www.securityfocus.com/bid/107323 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2019-1604?
- CVE-2019-1604 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-2019-1604?
- High severity. CVSS v3 base score is 7.8 out of 10.