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).
EPSS: 0.004 (35.5th percentile) — read the EPSS interpretation.
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.
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
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Patch, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
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.