# GHSA-wqcr-xm43-hpqr: Vulnerable version of libwebp and can be exploited with a malicious source image

> Attackers can execute arbitrary code by tricking users into processing malicious WebP images with the unmaintained FreeImage library.

- **Severity:** Not scored
- **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:** No
- **Published:** 6 Oct 2023

## What is GHSA-wqcr-xm43-hpqr?

GHSA-wqcr-xm43-hpqr is a memory corruption vulnerability in ImageResizer.Plugins.FreeImage, published on 6 Oct 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

### Impact

This vulnerability affects deployments of FreeImage that involve decoding or processing malicious source .webp files. If you only process your own trusted files, this should not affect you, but **you should remove FreeImage from your project, as it is not maintained and presents a massive security risk**. 

If you are using FreeImage via  ImageResizer.Plugins.FreeImage, please utilize [Imageflow](https://github.com/imazen/imageflow) or [Imageflow.Server](https://github.com/imazen/imageflow-dotnet-server) instead, or upgrade to ImageResizer 5 and use ImageResizer.Plugins.Imageflow (enable Prereleases on NuGet to access). 

FreeImage relies on Google's [libwebp](https://github.com/webmproject/libwebp) library to decode .webp images, and is affected by the recent zero-day out-of-bounds write vulnerability [CVE-2023-4863](https://nvd.nist.gov/vuln/detail/CVE-2023-4863) and https://github.com/advisories/GHSA-j7hp-h8jx-5ppr. The libwebp vulnerability also affects Chrome, Android, macOS, and other consumers of the library).

libwebp patched [the vulnerability](https://github.com/webmproject/libwebp/commit/2af26267cdfcb63a88e5c74a85927a12d6ca1d76 ) and released [1.3.2](https://github.com/webmproject/libwebp/releases/tag/v1.3.2). FreeImage hasn't been updated since then and is presumed vulnerable. 

### Patches

None. FreeImage has not been updated in several years.

### Workarounds

 If you are using ImageResizer.Plugins.FreeImage, please utilize [Imageflow](https://github.com/imazen/imageflow) or [Imageflow.Server](https://github.com/imazen/imageflow-dotnet-server) instead, or upgrade to ImageResizer 5 and use ImageResizer.Plugins.Imageflow (enable Prereleases on NuGet to access). 

### References

https://github.com/advisories/GHSA-j7hp-h8jx-5ppr
https://nvd.nist.gov/vuln/detail/CVE-2023-4863
https://github.com/webmproject/libwebp/commit/2af26267cdfcb63a88e5c74a85927a12d6ca1d76 
https://github.com/NoXF/libwebp-sys/commits/master

## Which versions are affected by GHSA-wqcr-xm43-hpqr?

2 open source packages ship an affected version, including ImageResizer.Plugins.FreeImage.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ImageResizer.Plugins.FreeImage` | NuGet | All versions to 4.2.8 | None |
| `ImageResizer.Plugins.FreeImage` | NuGet | All versions to 4.2.8 | None |

## How do I fix GHSA-wqcr-xm43-hpqr?

No fix has been published for GHSA-wqcr-xm43-hpqr yet. Limit exposure of the affected software until one is available.

## Is GHSA-wqcr-xm43-hpqr being exploited?

There is no known exploitation of GHSA-wqcr-xm43-hpqr in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-wqcr-xm43-hpqr and fix it if it is affected.

What it is: GHSA-wqcr-xm43-hpqr is a memory corruption vulnerability in ImageResizer.Plugins.FreeImage, published on 6 Oct 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: There is no known exploitation of GHSA-wqcr-xm43-hpqr in the wild and no public exploit code.

Affected packages and fixed versions:
- ImageResizer.Plugins.FreeImage (NuGet): affected all versions up to 4.2.8; no fix listed
- ImageResizer.Plugins.FreeImage (NuGet): affected all versions up to 4.2.8; no fix listed

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/GHSA-wqcr-xm43-hpqr/ (Markdown: https://insights.sbomify.com/GHSA-wqcr-xm43-hpqr/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-wqcr-xm43-hpqr

---
From sbomify Insights: https://insights.sbomify.com/GHSA-wqcr-xm43-hpqr/
Summaries are generated and may contain mistakes; the official description above is the record.