# CVE-2023-25435: Memory corruption in n/a

> A buffer overflow in libtiff allows attackers to execute arbitrary code or cause denial of service via crafted TIFF files.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 21 Jun 2023
- **Updated:** 6 Dec 2024
- **Also known as:** AZL-27206, BELL-CVE-2023-25435, DEBIAN-CVE-2023-25435, GHSA-7693-rm3h-988x, UBUNTU-CVE-2023-25435, openSUSE-SU-2024:13494-1

## What is CVE-2023-25435?

CVE-2023-25435 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 21 Jun 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

libtiff 4.5.0 is vulnerable to Buffer Overflow via extractContigSamplesShifted8bits() at /libtiff/tools/tiffcrop.c:3753.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-25435?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `tiff` | openSUSE:Tumbleweed | All versions | 4.6.0-3.1 |

Products: Libtiff Libtiff.

## How do I fix CVE-2023-25435?

Upgrade to a fixed version.

## Is CVE-2023-25435 being exploited?

There is no known exploitation of CVE-2023-25435 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-2023-25435 and fix it if it is affected.

What it is: CVE-2023-25435 is a medium-severity memory corruption vulnerability in Libtiff Libtiff, published on 21 Jun 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-25435 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-2023-25435/ (Markdown: https://insights.sbomify.com/CVE-2023-25435/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25435
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25435
- OSV: https://osv.dev/vulnerability/CVE-2023-25435

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-25435/
Summaries are generated and may contain mistakes; the official description above is the record.