Cisco NX-OS Software Bash Shell Role-Based Access Control Bypass Privilege Escalation Vulnerability (Cisco Nexus 3000 Series Switches)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.39 % · percentile 33 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | HIGH 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2019-10150
- GCVE · GCVE-0-2019-1593
CERT-FR advisories
- CERTFR-2019-AVI-092 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i5 < 7.0\(3\)i7\(4\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i4 < 7.0\(3\)i4\(9\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\) < 7.0\(3\)i7\(4\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\) < 7.0\(3\)f3\(5\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 8.1 < 8.2\(3\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 8.3 < 8.3\(1\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*< 13.2\(4d\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 14.0 < 14.0\(1h\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i4 < 7.0\(3\)i4\(9\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i5 < 7.0\(3\)i7\(4\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\) < 7.0\(3\)f3\(5\)
Affected products
| Product | Versions |
|---|---|
| Cisco · Nexus 3000 Series Switches | affected unspecified < 7.0(3)I7(4) |
| Cisco · Nexus 3500 Platform Switches | affected unspecified < 7.0(3)I7(4) |
| Cisco · Nexus 3600 Platform Switches | affected unspecified < 7.0(3)F3(5) |
| Cisco · Nexus 7000 and 7700 Series Switches | affected unspecified < 8.2(3) |
| Cisco · Nexus 9000 Series Fabric Switches in ACI Mode | affected unspecified < 13.2(4d) ; affected unspecified < 14.0(1h) |
| Cisco · Nexus 9000 Series Switches in Standalone NX-OS Mode | affected unspecified < 7.0(3)I4(9) ; affected unspecified < 7.0(3)I7(4) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |