# What is CVE-2019-18913?

> CVE-2019-18913 is a medium-severity flaw (CVSS 6.8) in Elitedesk 800 G5 Dm Firmware from HP, published on 31 January 2020. 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 0.6%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2019-18913

## 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:** 28 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 6.8 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:** 0.6% (latest exploit-likelihood forecast)
- **Published:** 31 January 2020
- **Record last updated:** 24 August 2020
- **Main product:** Elitedesk 800 G5 Dm Firmware from HP
- **Affected products:** 66

## What is CVE-2019-18913? In plain terms

An attacker has to be physically at the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### The official description

A potential security vulnerability with pre-boot DMA may allow unauthorized UEFI code execution using open-case attacks. This industry-wide issue requires physically accessing internal expansion slots with specialized hardware and software tools to modify UEFI code in memory. This affects HP Intel-based Business PCs that support Microsoft Windows 10 Kernel DMA protection. Affected versions depend on platform (prior to 01.04.02; or prior to 02.04.01; or prior to 02.04.02).

### What kind of flaw is it?

- Unknown: Unknown

### How an attack on it works

- Where an attacker can be: Physically at the device
- How hard it is to pull off: Easy: no special conditions
- Login needed first: No login needed
- 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:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Is CVE-2019-18913 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 0.6%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 0.6%, 0.6%, 0.6%, 0.6%, 0.6%, 0.6%, 0.6%.

### Timeline

- 31 January 2020: Published
- 24 August 2020: Record last updated

### How Precursor Intelligence ranks it

CVE-2019-18913 scores **28 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-2019-18913?

The published record lists 66 products. Versions are as published: "before 02.04.02" means every version up to, but not including, 02.04.02.

- [Elitedesk 800 G5 Dm Firmware](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_dm_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.02
- [Elite Dragonfly](https://www.precursorintelligence.com/product/hp/elite_dragonfly) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elite Dragonfly Firmware](https://www.precursorintelligence.com/product/hp/elite_dragonfly_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elite X2 G4](https://www.precursorintelligence.com/product/hp/elite_x2_g4) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elite X2 G4 Firmware](https://www.precursorintelligence.com/product/hp/elite_x2_g4_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 830 G6](https://www.precursorintelligence.com/product/hp/elitebook_830_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 830 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_830_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 836 G6](https://www.precursorintelligence.com/product/hp/elitebook_836_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 836 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_836_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 840 G6](https://www.precursorintelligence.com/product/hp/elitebook_840_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 840 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_840_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 840 G6 Healthcare Edition](https://www.precursorintelligence.com/product/hp/elitebook_840_g6_healthcare_edition) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 840 G6 Healthcare Edition Firmware](https://www.precursorintelligence.com/product/hp/elitebook_840_g6_healthcare_edition_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 846 G6](https://www.precursorintelligence.com/product/hp/elitebook_846_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 846 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_846_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 846 G6 Healthcare Edition](https://www.precursorintelligence.com/product/hp/elitebook_846_g6_healthcare_edition) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 846 G6 Healthcare Edition Firmware](https://www.precursorintelligence.com/product/hp/elitebook_846_g6_healthcare_edition_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook 850 G6](https://www.precursorintelligence.com/product/hp/elitebook_850_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook 850 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_850_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook X360 1030 G4](https://www.precursorintelligence.com/product/hp/elitebook_x360_1030_g4) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook X360 1030 G4 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_x360_1030_g4_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook X360 1040 G6](https://www.precursorintelligence.com/product/hp/elitebook_x360_1040_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook X360 1040 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_x360_1040_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitebook X360 830 G6](https://www.precursorintelligence.com/product/hp/elitebook_x360_830_g6) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitebook X360 830 G6 Firmware](https://www.precursorintelligence.com/product/hp/elitebook_x360_830_g6_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Elitedesk 800 G5 Dm](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_dm) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitedesk 800 G5 Sff](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_sff) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitedesk 800 G5 Sff Firmware](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_sff_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.02
- [Elitedesk 800 G5 Twr](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_twr) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Elitedesk 800 G5 Twr Firmware](https://www.precursorintelligence.com/product/hp/elitedesk_800_g5_twr_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.02
- [Eliteone 800 G5 Aio](https://www.precursorintelligence.com/product/hp/eliteone_800_g5_aio) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Eliteone 800 G5 Aio Firmware](https://www.precursorintelligence.com/product/hp/eliteone_800_g5_aio_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.02
- [Probook 640 G5](https://www.precursorintelligence.com/product/hp/probook_640_g5) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Probook 640 G5 Firmware](https://www.precursorintelligence.com/product/hp/probook_640_g5_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Probook 650 G5](https://www.precursorintelligence.com/product/hp/probook_650_g5) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Probook 650 G5 Firmware](https://www.precursorintelligence.com/product/hp/probook_650_g5_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Prodesk 400 G5 Dm](https://www.precursorintelligence.com/product/hp/prodesk_400_g5_dm) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 400 G5 Dm Firmware](https://www.precursorintelligence.com/product/hp/prodesk_400_g5_dm_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 400 G6 Mt](https://www.precursorintelligence.com/product/hp/prodesk_400_g6_mt) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 400 G6 Mt Firmware](https://www.precursorintelligence.com/product/hp/prodesk_400_g6_mt_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 400 G6 Sff](https://www.precursorintelligence.com/product/hp/prodesk_400_g6_sff) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 400 G6 Sff Firmware](https://www.precursorintelligence.com/product/hp/prodesk_400_g6_sff_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.02
- [Prodesk 480 G6 Mt](https://www.precursorintelligence.com/product/hp/prodesk_480_g6_mt) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 480 G6 Mt Firmware](https://www.precursorintelligence.com/product/hp/prodesk_480_g6_mt_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 600 G5 Dm](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_dm) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 600 G5 Dm Firmware](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_dm_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 600 G5 Mt](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_mt) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 600 G5 Mt Firmware](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_mt_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 600 G5 Pci Mt](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_pci_mt) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 600 G5 Pci Mt Firmware](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_pci_mt_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Prodesk 600 G5 Sff](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_sff) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Prodesk 600 G5 Sff Firmware](https://www.precursorintelligence.com/product/hp/prodesk_600_g5_sff_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Proone 400 G5 Aio](https://www.precursorintelligence.com/product/hp/proone_400_g5_aio) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Proone 400 G5 Aio Firmware](https://www.precursorintelligence.com/product/hp/proone_400_g5_aio_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Proone 440 G5 Aio](https://www.precursorintelligence.com/product/hp/proone_440_g5_aio) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Proone 440 G5 Aio Firmware](https://www.precursorintelligence.com/product/hp/proone_440_g5_aio_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Proone 600 G5 Aio](https://www.precursorintelligence.com/product/hp/proone_600_g5_aio) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Proone 600 G5 Aio Firmware](https://www.precursorintelligence.com/product/hp/proone_600_g5_aio_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 02.04.01
- [Zbook 14u G6 Mobile Workstation](https://www.precursorintelligence.com/product/hp/zbook_14u_g6_mobile_workstation) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Zbook 14u G6 Mobile Workstation Firmware](https://www.precursorintelligence.com/product/hp/zbook_14u_g6_mobile_workstation_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Zbook 15u G6 Mobile Workstation](https://www.precursorintelligence.com/product/hp/zbook_15u_g6_mobile_workstation) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Zbook 15u G6 Mobile Workstation Firmware](https://www.precursorintelligence.com/product/hp/zbook_15u_g6_mobile_workstation_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Zbook 17u G6 Mobile Workstation](https://www.precursorintelligence.com/product/hp/zbook_17u_g6_mobile_workstation) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Zbook 17u G6 Mobile Workstation Firmware](https://www.precursorintelligence.com/product/hp/zbook_17u_g6_mobile_workstation_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02
- [Zhan X 13 G2](https://www.precursorintelligence.com/product/hp/zhan_x_13_g2) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Zhan X 13 G2 Firmware](https://www.precursorintelligence.com/product/hp/zhan_x_13_g2_firmware) by [HP](https://www.precursorintelligence.com/vendors/hp) (Operating system): before 01.04.02

## How do I fix CVE-2019-18913?

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

- [support.hp.com](https://support.hp.com/us-en/document/c06549501) (Patch, Vendor advisory)

## Questions

### What is CVE-2019-18913?

CVE-2019-18913 is a medium-severity flaw in Elitedesk 800 G5 Dm Firmware from HP, published on 31 January 2020. An attacker has to be physically at the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### How serious is CVE-2019-18913?

It scores 6.8 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2019-18913 is 28 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-2019-18913 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 0.6%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2019-18913 affect?

For Elitedesk 800 G5 Dm Firmware from HP: before 02.04.02. The record lists 66 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2019-18913?

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-2019-18913 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.

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