# CVE-2023-31568: Memory corruption in n/a

> A heap buffer overflow in the Podofo PDF library allows attackers to execute arbitrary code or cause denial of service via crafted PDF files.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:** 10 May 2023
- **Updated:** 27 Jan 2025
- **Also known as:** GHSA-v545-mfxj-6893

## What is CVE-2023-31568?

CVE-2023-31568 is a high-severity memory corruption vulnerability in Podofo Project Podofo, published on 10 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

Podofo v0.10.0 was discovered to contain a heap buffer overflow via the component PoDoFo::PdfEncryptRC4::PdfEncryptRC4.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-31568?

It affects 1 product.


Products: Podofo Project Podofo.

## How do I fix CVE-2023-31568?

Upgrade to a fixed version.

## Is CVE-2023-31568 being exploited?

There is no known exploitation of CVE-2023-31568 in the wild and no public exploit code.

## Other vulnerabilities in Podofo Project Podofo

- [CVE-2017-8378](https://insights.sbomify.com/CVE-2017-8378/): Memory corruption in n/a (critical 9.8)
- [CVE-2015-8981](https://insights.sbomify.com/CVE-2015-8981/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-31556](https://insights.sbomify.com/CVE-2023-31556/): Memory corruption in n/a (high 8.8)
- [CVE-2023-31566](https://insights.sbomify.com/CVE-2023-31566/): Use after free in n/a (high 8.8)
- [CVE-2023-31567](https://insights.sbomify.com/CVE-2023-31567/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-31568 and fix it if it is affected.

What it is: CVE-2023-31568 is a high-severity memory corruption vulnerability in Podofo Project Podofo, published on 10 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: There is no known exploitation of CVE-2023-31568 in the wild and no public exploit code.

Affected product: Podofo Project Podofo. 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-2023-31568/ (Markdown: https://insights.sbomify.com/CVE-2023-31568/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-31568
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-31568
- OSV: https://osv.dev/vulnerability/CVE-2023-31568

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-31568/
Summaries are generated and may contain mistakes; the official description above is the record.