What is CVE-2019-1614?A high-severity flaw in NX-OS, explained.
CVE-2019-1614 is a high-severity flaw (CVSS 8.8) in NX-OS from Cisco, published on 11 March 2019. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 4.1%. If you run an affected version, plan in the vendor’s fix.
Published 11 March 2019. Record last updated 5 October 2020. We keep this page's data up to date.
What is CVE-2019-1614? In plain terms.
It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The vulnerability is due to incorrect input validation of user-supplied data by the NX-API subsystem. An attacker could exploit this vulnerability by sending malicious HTTP or HTTPS packets to the management interface of an affected system that has the NX-API feature enabled. A successful exploit could allow the attacker to perform a command-injection attack and execute arbitrary commands with root privileges. Note: NX-API is disabled by default. MDS 9000 Series Multilayer Switches are affected running software versions prior to 8.1(1b) and 8.2(3). Nexus 3000 Series Switches are affected running software versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected running software versions prior to 7.0(3)I7(4). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected running software versions prior to 7.3(4)N1(1). 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(4). Nexus 7000 and 7700 Series Switches are affected running software versions prior to 7.3(3)D1(1) and 8.2(3).
What kind of flaw is it?
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
How an attack on it works
Read straight from its severity rating, translated out of the shorthand.
- Where an attacker can beAnywhere on the internet
- How hard it is to pull offEasy: no special conditions
- Login needed firstAn ordinary user account
- Does someone have to clickNo, nobody has to do anything
- What an attacker getsCan read data, change data and take it offline
Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is CVE-2019-1614 being exploited? Not that we know of.
It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 4.1%. That can change at any time, which is why we keep watching.
Timeline
- Published
- Record last updated
CVE-2019-1614 scores 49. Action: Plan remediation.
We keep the score of every published flaw up to date as the evidence changes. Four things go into the score, and evidence that criminals are actually using it counts most. In order:
- Evidence it is being exploitedBiggest factor
- How severe it isStrong factor
- How widely exposed it isSmaller factor
- Threat activity around itSmaller factor
85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score.
When CVE-2019-1614 matches software you track, it lands in your list with its score and the reasons behind it.
See your own ranked list →Who is affected by CVE-2019-1614? 11 products.
The published record lists 11 products from 1 vendor. Versions are shown as published: "before 7.0(3)i4(9)" means every version up to, but not including, 7.0(3)i4(9). If you run one of these, check your version, then go to the fix below.
- Operating system
NX-OS
by Cisco
Affected versionsbefore 7.0(3)i4(9)before 7.3(3)i4(9)7.0(3) to before 7.0(3)i7(4)7.2 to before 7.3(3)d1(1)7.3 to before 8.1(1b)8.0 to before 8.2(3)8.2 to before 8.3(2) - Hardware
Mds 9000
by Cisco
Affected versionsversion not specified - Hardware
Nexus 2000
by Cisco
Affected versionsversion not specified - Hardware
Nexus 3000
by Cisco
Affected versionsversion not specified - Hardware
Nexus 3500
by Cisco
Affected versionsversion not specified - Hardware
Nexus 5500
by Cisco
Affected versionsversion not specified - Hardware
Nexus 5600
by Cisco
Affected versionsversion not specified - Hardware
Nexus 6000
by Cisco
Affected versionsversion not specified - Hardware
Nexus 7000
by Cisco
Affected versionsversion not specified
How do I fix CVE-2019-1614? Four steps.
- Check whether you run itCompare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
- Apply the vendor’s fixInstall the update named in the vendor’s advisory. We’ve put the advisory first in the list.
- If you can’t patch todayFollow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
- Keep an eye on itTrack the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.
Does CVE-2019-1614 affect you? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
Free plan, no card needed. Nothing to install.
1 new flaw affects software Acme tracks
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, remote attacker to execute arbitrary commands with root privilege...
- Matched to
- NX-OS on Acme's software list
- What to do
- Plan in the vendor’s update
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
CVE-2019-1614 is a high-severity flaw in NX-OS from Cisco, published on 11 March 2019. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.
It scores 8.8 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2019-1614 is 49 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.
It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 4.1%. That can change at any time, which is why we keep watching.
For NX-OS from Cisco: before 7.0(3)i4(9), before 7.3(3)i4(9), 7.0(3) to before 7.0(3)i7(4), 7.2 to before 7.3(3)d1(1), 7.3 to before 8.1(1b), 8.0 to before 8.2(3) and 1 more. The record lists 11 products in all, each with its versions, under "Who is affected" on this page.
Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.