# PYSEC-2019-48 - In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a…

Source: https://junglewise.ai/threats/pysec-2019-48-in-rpyc-4-1-x-through-4-1-1-a-remote-attacker-can-e4c92328  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-10-03  
License: CC BY 4.0 with a link back

Severity: info · Published 2019-10-03

In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a remote procedure call that executes code for an RPyC service with default configuration settings.

Technologies: [rpyc (PyPI)](https://junglewise.ai/threats/technologies/rpyc). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Informational severity, published 3 October 2019.

**Which products and versions are affected?** rpyc (PyPI) ECOSYSTEM:introduced=4.1.0,fixed=4.1.2.

**Is there a fix for This vulnerability?** Yes. rpyc (PyPI): upgrade to 4.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run rpyc (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- rpyc (PyPI): upgrade to 4.1.2 or later

  ```sh
  pip install "rpyc>=4.1.2"
  ```


## Affected products

- rpyc (PyPI) ECOSYSTEM:introduced=4.1.0,fixed=4.1.2

## Related threats

- [RPyC's missing security check results in code execution when using numpy.array on the server-side.](https://junglewise.ai/threats/cve-2024-27758-rpyc-s-missing-security-check-results-in-code-execution-when)
- [Dynamic modification of RPyC service due to missing security check](https://junglewise.ai/threats/cve-2019-16328-duplicate-advisory-possible-remote-code-execution-via-a-remote)