# CVE-2006-0405: Null dereference in n/a

> Remote attackers can crash applications using libtiff by providing a crafted TIFF image, causing a denial of service via null pointer dereference.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **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 Jan 2006
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2006-0405, GHSA-cghf-hqpf-m9f9

## What is CVE-2006-0405?

CVE-2006-0405 is a medium-severity vulnerability in Libtiff Libtiff, published on 25 Jan 2006. 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

The TIFFFetchShortPair function in tif_dirread.c in libtiff 3.8.0 allows remote attackers to cause a denial of service (application crash) via a crafted TIFF image that triggers a NULL pointer dereference, possibly due to changes in type declarations and/or the TIFFVSetField function.

## Which versions are affected by CVE-2006-0405?

It affects 1 product.


Products: Libtiff Libtiff.

## How do I fix CVE-2006-0405?

Upgrade to a fixed version.

## Is CVE-2006-0405 being exploited?

There is no known exploitation of CVE-2006-0405 in the wild and no public exploit code.

## Other vulnerabilities in Libtiff Libtiff

- [CVE-2004-1308](https://insights.sbomify.com/CVE-2004-1308/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0929](https://insights.sbomify.com/CVE-2004-0929/): Memory corruption in n/a (critical 10.0)
- [CVE-2025-61144](https://insights.sbomify.com/CVE-2025-61144/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-9533](https://insights.sbomify.com/CVE-2016-9533/): Memory corruption in n/a (critical 9.8)
- [CVE-2016-9534](https://insights.sbomify.com/CVE-2016-9534/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-0405 and fix it if it is affected.

What it is: CVE-2006-0405 is a medium-severity vulnerability in Libtiff Libtiff, published on 25 Jan 2006. 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-2006-0405 in the wild and no public exploit code.

Affected product: Libtiff Libtiff. 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-2006-0405/ (Markdown: https://insights.sbomify.com/CVE-2006-0405/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-0405
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-0405
- OSV: https://osv.dev/vulnerability/CVE-2006-0405

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-0405/
Summaries are generated and may contain mistakes; the official description above is the record.