# CVE-2023-34195: Code injection in n/a

> Attackers can achieve arbitrary code execution in the DXE phase by manipulating a UEFI variable used as a function pointer in InsydeH2O firmware.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Sep 2023
- **Updated:** 25 Sep 2024
- **Also known as:** GHSA-xjr2-gpjv-fx34

## What is CVE-2023-34195?

CVE-2023-34195 is a high-severity code injection vulnerability in Insyde Insydeh2o, published on 18 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in SystemFirmwareManagementRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The implementation of the GetImage method retrieves the value of a runtime variable named GetImageProgress, and later uses this value as a function pointer. This variable is wiped out by the same module near the end of the function. By setting this UEFI variable from the OS to point into custom code, an attacker could achieve arbitrary code execution in the DXE phase, before several chipset locks are set.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-34195?

It affects 1 product.


Products: Insyde Insydeh2o.

## How do I fix CVE-2023-34195?

No fix has been published for CVE-2023-34195 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34195 being exploited?

There is no known exploitation of CVE-2023-34195 in the wild and no public exploit code.

## Other vulnerabilities in Insyde Insydeh2o

- [CVE-2021-41842](https://insights.sbomify.com/CVE-2021-41842/): Missing authorization in n/a (critical 9.8)
- [CVE-2023-22612](https://insights.sbomify.com/CVE-2023-22612/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22613](https://insights.sbomify.com/CVE-2023-22613/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22614](https://insights.sbomify.com/CVE-2023-22614/): Memory corruption in n/a (high 8.8)
- [CVE-2023-22615](https://insights.sbomify.com/CVE-2023-22615/): Memory corruption in n/a (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34195 and fix it if it is affected.

What it is: CVE-2023-34195 is a high-severity code injection vulnerability in Insyde Insydeh2o, published on 18 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-34195 in the wild and no public exploit code.

Affected product: Insyde Insydeh2o. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-34195/ (Markdown: https://insights.sbomify.com/CVE-2023-34195/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34195
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34195
- OSV: https://osv.dev/vulnerability/CVE-2023-34195

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34195/
Summaries are generated and may contain mistakes; the official description above is the record.