CVE-2019-1611

Cisco FXOS and NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1611)

MEDIUM

6.7

CVSS Score

Published: March 11, 2019 at 10:00 PM UTC

Updated: June 17, 2026 at 02:28 AM UTC

18 products affected across 1 vendorNx OSFxosFirepower 9300

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Severity

MEDIUM6.7

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

A vulnerability in the CLI of Cisco NX-OS Software and Cisco FXOS Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system of an affected device. The vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input as the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with elevated privileges. An attacker would need valid administrator credentials to exploit this vulnerability. Firepower 4100 Series Next-Generation Firewalls are affected running software versions prior to 2.2.2.91, 2.3.1.110, and 2.4.1.222. Firepower 9300 Security Appliance are affected running software versions prior to 2.2.2.91, 2.3.1.110, and 2.4.1.222. MDS 9000 Series Multilayer Switches are affected running software versions prior to 6.2(25) and 8.3(1). Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(5). Nexus 3500 Platform Switches are affected running software versions prior to 7.0(3)I7(5). Nexus 3600 Platform Switches are affected running software versions prior to 7.0(3)F3(5). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected running software versions prior to 7.1(5)N1(1b) and 7.3(4)N1(1). Nexus 7000 and 7700 Series Switches are affected running software versions prior to 6.2(22), 7.3(3)D1(1), 8.2(3). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(5). Nexus 9500 R-Series Line Cards and Fabric Modules are affected running software versions prior to 7.0(3)F3(5).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fxos · Cisco

95%

1.1 ≤ v < 2.2.2.912.3 ≤ v < 2.3.1.1102.4 ≤ v < 2.4.1.222

Affected range stops below 2.2.2.91, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.1.110, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.4.1.222, so it looks safe — our inference, not a vendor statement

cisco-firepower-4100 (environment) · cisco-firepower-9300 (environment)

Nx OS · Cisconpm

95%

v < 6.2(22)v < 7.0(3)i4(9)v < 7.1(5)n1(1b)v < 7.3(3)i7(5)5.2 ≤ v < 6.2(25)7.0(3) ≤ v < 7.0(3)i7(5)7.0(3)f1 ≤ v < 7.3(3)f3(5)7.0(3)f3 ≤ v < 7.0(3)f3(5)7.0(3)i5 ≤ v < 7.0(3)i7(5)7.2 ≤ v < 7.3(3)d1(1)7.2 ≤ v < 7.3(4)n1(1)7.3 ≤ v < 8.3(1)8.0 ≤ v < 8.2(3)

Affected range stops below 6.2(22), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2(25), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)f3(5), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)i4(9), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)i7(5), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.1(5)n1(1b), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(3)d1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(3)f3(5), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(3)i7(5), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(4)n1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.2(3), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.3(1), so it looks safe — our inference, not a vendor statement

cisco-mds-9000 (environment) · cisco-nexus-2000 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3600 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5600 (environment) · cisco-nexus-6000 (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9500 (environment)

Firepower 4100 Series Next-Generation Firewall · Cisco

60%

v < 2.2.2.91v < 2.3.1.110v < 2.4.1.222

Affected range stops below 2.2.2.91, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.1.110, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.4.1.222, so it looks safe — our inference, not a vendor statement

Firepower 9300 Security Appliance · Cisco

60%

v < 2.2.2.91v < 2.3.1.110v < 2.4.1.222

Affected range stops below 2.2.2.91, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.1.110, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.4.1.222, so it looks safe — our inference, not a vendor statement

Mds 9000 · Cisco

60%

v < 6.2(25)v < 8.3(1)

Affected range stops below 6.2(25), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.3(1), so it looks safe — our inference, not a vendor statement

Nexus 2000 · Cisco

60%

v < 7.1(5)N1(1b)v < 7.3(4)N1(1)

Affected range stops below 7.1(5)N1(1b), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(4)N1(1), so it looks safe — our inference, not a vendor statement

Nexus 3000 · Cisco

60%

v < 7.0(3)I4(9)v < 7.0(3)I7(5)

Affected range stops below 7.0(3)I4(9), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)I7(5), so it looks safe — our inference, not a vendor statement

Nexus 3500 · Cisco

60%

v < 7.0(3)I7(5)

Affected range stops below 7.0(3)I7(5), so it looks safe — our inference, not a vendor statement

Nexus 3600 · Cisco

60%

v < 7.0(3)F3(5)

Affected range stops below 7.0(3)F3(5), so it looks safe — our inference, not a vendor statement

Nexus 5500 · Cisco

60%

v < 7.1(5)N1(1b)v < 7.3(4)N1(1)

Affected range stops below 7.1(5)N1(1b), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(4)N1(1), so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1611

References (2)

VDB Entryx_refsource_BIDThird Party Advisory

Source: [email protected]

http://www.securityfocus.com/bid/107381

Vendor Advisoryx_refsource_CISCO

Source: [email protected]

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1611

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.7MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-77CWE-88

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