# CVE-2023-2804: Memory corruption in libjpeg-turbo

> A heap-based buffer overflow in libjpeg-turbo allows attackers to cause application crashes via crafted 12-bit JPEG images.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 25 May 2023
- **Updated:** 16 Jan 2025
- **Also known as:** ALPINE-CVE-2023-2804, CLEANSTART-2026-EW60545, CVE-2023-31813, GHSA-jv36-3qpq-7g23, openSUSE-SU-2024:13552-1

## What is CVE-2023-2804?

CVE-2023-2804 is a medium-severity memory corruption vulnerability in libjpeg-turbo, published on 25 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrgext.c file. The vulnerability can only be exploited with 12-bit data precision for which the range of the sample data type exceeds the valid sample range, hence, an attacker could craft a 12-bit lossless JPEG image that contains out-of-range 12-bit samples. An application attempting to decompress such image using merged upsampling would lead to segmentation fault or buffer overflows, causing an application to crash.

Weakness: CWE-787 (Out-of-bounds Write), CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2023-2804?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libjpeg-turbo` | openSUSE:Tumbleweed | All versions | 8.3.2-77.1 |

Products: Libjpeg-Turbo Libjpeg-Turbo.

## How do I fix CVE-2023-2804?

Apply the vendor's patch.

## Is CVE-2023-2804 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2804 exists.

## Other vulnerabilities in libjpeg-turbo

- [CVE-2020-17541](https://insights.sbomify.com/CVE-2020-17541/): Memory corruption in n/a (high 8.8)
- [CVE-2018-20330](https://insights.sbomify.com/CVE-2018-20330/): Integer overflow in n/a (high 8.8)
- [CVE-2020-13790](https://insights.sbomify.com/CVE-2020-13790/): Memory corruption in n/a (high 8.1)
- [CVE-2018-19664](https://insights.sbomify.com/CVE-2018-19664/): Memory corruption in n/a (medium 6.5)
- [CVE-2017-15232](https://insights.sbomify.com/CVE-2017-15232/): Null dereference in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2804 and fix it if it is affected.

What it is: CVE-2023-2804 is a medium-severity memory corruption vulnerability in libjpeg-turbo, published on 25 May 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2804 exists.

Affected product: libjpeg-turbo. 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-2023-2804/ (Markdown: https://insights.sbomify.com/CVE-2023-2804/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2804
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2804
- OSV: https://osv.dev/vulnerability/CVE-2023-2804

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2804/
Summaries are generated and may contain mistakes; the official description above is the record.