# What is CVE-2023-27391?

> CVE-2023-27391 is a medium-severity flaw (CVSS 6.7) in Oneapi Toolkit and Component Software Installer from Intel, published on 11 August 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-2023-27391

## 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:** 20 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:** 11 August 2023
- **Record last updated:** 7 November 2023
- **Main product:** Oneapi Toolkit and Component Software Installer from Intel
- **Affected products:** 29

## What is CVE-2023-27391? 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

Improper access control in some Intel(R) oneAPI Toolkit and component software installers before version 4.3.1.493 may allow a privileged user to potentially enable escalation of privilege via local access.

### What kind of flaw is it?

- CWE-284: Improper Access Control

### 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-2023-27391 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

- 11 August 2023: Published
- 7 November 2023: Record last updated

### How Precursor Intelligence ranks it

CVE-2023-27391 scores **20 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-2023-27391?

The published record lists 29 products. Versions are as published: "before 4.3.1.493" means every version up to, but not including, 4.3.1.493.

- [Oneapi Toolkit and Component Software Installer](https://www.precursorintelligence.com/product/intel/oneapi_toolkit_and_component_software_installer) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 4.3.1.493
- [Advisor for Oneapi](https://www.precursorintelligence.com/product/intel/advisor_for_oneapi) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [CPU Runtime for Opencl Applications](https://www.precursorintelligence.com/product/intel/cpu_runtime_for_opencl_applications) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Distribution for Python Programming Language](https://www.precursorintelligence.com/product/intel/distribution_for_python_programming_language) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- Dpc++ Compatibility Tool by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Embree Ray Tracing Kernel Library](https://www.precursorintelligence.com/product/intel/embree_ray_tracing_kernel_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Fortran Compiler](https://www.precursorintelligence.com/product/intel/fortran_compiler) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Implicit Spmd Program Compiler](https://www.precursorintelligence.com/product/intel/implicit_spmd_program_compiler) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 1.19.1
- [Inspector for Oneapi](https://www.precursorintelligence.com/product/intel/inspector_for_oneapi) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Integrated Performance Primitives](https://www.precursorintelligence.com/product/intel/integrated_performance_primitives) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2021.8
- [Ipp Cryptography](https://www.precursorintelligence.com/product/intel/ipp_cryptography) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2021.7.0
- [Mpi Library](https://www.precursorintelligence.com/product/intel/mpi_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2021.9.0
- [Oneapi Base Toolkit](https://www.precursorintelligence.com/product/intel/oneapi_base_toolkit) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Data Analytics Library](https://www.precursorintelligence.com/product/intel/oneapi_data_analytics_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Deep Neural Network Library](https://www.precursorintelligence.com/product/intel/oneapi_deep_neural_network_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- Oneapi Dpc++ Library (onedpl) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2022.1
- Oneapi Dpc++/c++ Compiler by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Hpc Toolkit](https://www.precursorintelligence.com/product/intel/oneapi_hpc_toolkit) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi IOT Toolkit](https://www.precursorintelligence.com/product/intel/oneapi_iot_toolkit) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Math Kernel Library](https://www.precursorintelligence.com/product/intel/oneapi_math_kernel_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Rendering Toolkit](https://www.precursorintelligence.com/product/intel/oneapi_rendering_toolkit) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Oneapi Threading Building Blocks](https://www.precursorintelligence.com/product/intel/oneapi_threading_building_blocks) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2021.9.0
- [Oneapi Video Processing Library](https://www.precursorintelligence.com/product/intel/oneapi_video_processing_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Open Image Denoise](https://www.precursorintelligence.com/product/intel/open_image_denoise) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 1.4.3
- [Open Volume Kernel Library](https://www.precursorintelligence.com/product/intel/open_volume_kernel_library) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Ospray](https://www.precursorintelligence.com/product/intel/ospray) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Ospray Studio](https://www.precursorintelligence.com/product/intel/ospray_studio) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1
- [Trace Analyzer and Collector](https://www.precursorintelligence.com/product/intel/trace_analyzer_and_collector) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2021.9.0
- [Vtune Profiler for Oneapi](https://www.precursorintelligence.com/product/intel/vtune_profiler_for_oneapi) by [Intel](https://www.precursorintelligence.com/vendors/intel) (Application): before 2023.1

## How do I fix CVE-2023-27391?

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

- [intel.com](http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00890.html) (Vendor advisory)

## Questions

### What is CVE-2023-27391?

CVE-2023-27391 is a medium-severity flaw in Oneapi Toolkit and Component Software Installer from Intel, published on 11 August 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-2023-27391?

It scores 6.7 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-27391 is 20 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-2023-27391 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-2023-27391 affect?

For Oneapi Toolkit and Component Software Installer from Intel: before 4.3.1.493. The record lists 29 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2023-27391?

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-2023-27391 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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