# What is CVE-2023-20015? > CVE-2023-20015 is a medium-severity flaw (CVSS 6.7) in Firepower 4100 from Cisco, published on 23 February 2023. 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 0.2%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2023-20015 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 27 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 6.7 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.2% (latest exploit-likelihood forecast) - **Published:** 23 February 2023 - **Record last updated:** 7 November 2023 - **Main product:** Firepower 4100 from Cisco - **Affected products:** 39 ## What is CVE-2023-20015? In plain terms An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### The official description A vulnerability in the CLI of Cisco Firepower 4100 Series, Cisco Firepower 9300 Security Appliances, and Cisco UCS 6200, 6300, 6400, and 6500 Series Fabric Interconnects could allow an authenticated, local attacker to inject unauthorized commands. This vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute unauthorized commands within the CLI. An attacker with Administrator privileges could also execute arbitrary commands on the underlying operating system of Cisco UCS 6400 and 6500 Series Fabric Interconnects with root-level privileges. ### What kind of flaw is it? - CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') ### How an attack on it works - Where an attacker can be: Already on the device - How hard it is to pull off: Easy: no special conditions - Login needed first: An administrator account - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can read data, change data and take it offline Severity vector: `CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H` ## Is CVE-2023-20015 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 0.2%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%. ### Timeline - 23 February 2023: Published - 7 November 2023: Record last updated ### How Precursor Intelligence ranks it CVE-2023-20015 scores **27 out of 100 (Low)**, with the action "Monitor". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2023-20015? The published record lists 39 products. Versions are as published: "4.0 to before 4.0(4o)" means from 4.0 up to, but not including, 4.0(4o). - [Firepower 4100](https://www.precursorintelligence.com/product/cisco/firepower_4100) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS Central Software](https://www.precursorintelligence.com/product/cisco/ucs_central_software) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Application): 4.0 to before 4.0(4o), 4.1 to before 4.1(3k), 4.2 to before 4.2(2d) - [Firepower 4110](https://www.precursorintelligence.com/product/cisco/firepower_4110) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4112](https://www.precursorintelligence.com/product/cisco/firepower_4112) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4115](https://www.precursorintelligence.com/product/cisco/firepower_4115) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4120](https://www.precursorintelligence.com/product/cisco/firepower_4120) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4125](https://www.precursorintelligence.com/product/cisco/firepower_4125) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4140](https://www.precursorintelligence.com/product/cisco/firepower_4140) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4145](https://www.precursorintelligence.com/product/cisco/firepower_4145) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4150](https://www.precursorintelligence.com/product/cisco/firepower_4150) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-24](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-36](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-36) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-40](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-40) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-44](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-44) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-44 X 3](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-44_x_3) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-48](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-48) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-56](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-56) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-56 X 3](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-56_x_3) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower Extensible Operating System](https://www.precursorintelligence.com/product/cisco/firepower_extensible_operating_system) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6200](https://www.precursorintelligence.com/product/cisco/ucs_6200) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6200 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6200_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6248up](https://www.precursorintelligence.com/product/cisco/ucs_6248up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6248up Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6248up_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6296up](https://www.precursorintelligence.com/product/cisco/ucs_6296up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6296up Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6296up_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6300](https://www.precursorintelligence.com/product/cisco/ucs_6300) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6300 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6300_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6324](https://www.precursorintelligence.com/product/cisco/ucs_6324) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6324 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6324_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6332](https://www.precursorintelligence.com/product/cisco/ucs_6332) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6332_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6332-16up](https://www.precursorintelligence.com/product/cisco/ucs_6332-16up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332-16up Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6332-16up_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 64108](https://www.precursorintelligence.com/product/cisco/ucs_64108) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 64108 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_64108_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6454](https://www.precursorintelligence.com/product/cisco/ucs_6454) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6454 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6454_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified - [UCS 6536](https://www.precursorintelligence.com/product/cisco/ucs_6536) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6536 Firmware](https://www.precursorintelligence.com/product/cisco/ucs_6536_firmware) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): version not specified ## How do I fix CVE-2023-20015? 1. **Check whether you run it.** Compare 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. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track 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. ### References - [sec.cloudapps.cisco.com](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxfp-cmdinj-XXBZjtR) (Vendor advisory) ## Questions ### What is CVE-2023-20015? CVE-2023-20015 is a medium-severity flaw in Firepower 4100 from Cisco, published on 23 February 2023. An attacker has to be already on the device with an administrator account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2023-20015? It scores 6.7 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-20015 is 27 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2023-20015 being exploited? 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 0.2%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2023-20015 affect? For Firepower 4100 from Cisco: version not specified. The record lists 39 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2023-20015? 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. ## Does CVE-2023-20015 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact