# OSV-2020-1880: Use-of-uninitialized-value in c_pdf14trans_clist_read_update

> An attacker can cause a denial of service in Ghostscript by triggering a use-of-uninitialized-value error during PDF processing.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Not stated
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Sep 2020

## What is OSV-2020-1880?

OSV-2020-1880 is a vulnerability in ghostscript, published on 29 Sep 2020. 

### Official description

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21640

```
Crash type: Use-of-uninitialized-value
Crash state:
c_pdf14trans_clist_read_update
apply_create_compositor
execute_compositor_queue
```

## Which versions are affected by OSV-2020-1880?

1 open source package ship an affected version, including ghostscript.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ghostscript` | OSS-Fuzz | All versions | None |

## How do I fix OSV-2020-1880?

No fix has been published for OSV-2020-1880 yet. Limit exposure of the affected software until one is available.

## Is OSV-2020-1880 being exploited?

There is no known exploitation of OSV-2020-1880 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for OSV-2020-1880 and fix it if it is affected.

What it is: OSV-2020-1880 is a vulnerability in ghostscript, published on 29 Sep 2020. 
Exploitation: There is no known exploitation of OSV-2020-1880 in the wild and no public exploit code.

Affected packages and fixed versions:
- ghostscript (OSS-Fuzz): affected all versions; 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/OSV-2020-1880/ (Markdown: https://insights.sbomify.com/OSV-2020-1880/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/OSV-2020-1880

---
From sbomify Insights: https://insights.sbomify.com/OSV-2020-1880/
Summaries are generated and may contain mistakes; the official description above is the record.