---
id: 4444
title: "Bad Neighbor on FreeBSD: IPv6 Router Advertisement Vulnerabilities in rtsold (CVE-2020-25577)"
source_domain: blog.quarkslab.com
source_url: "https://blog.quarkslab.com/bad-neighbor-on-freebsd-ipv6-router-advertisement-vulnerabilities-in-rtsold-cve-2020-25577.html"
published_at: "2021-01-27T23:00:00Z"
tags: ["rce", "vulnerability", "ipv6", "router-advertisement", "freebsd", "cve-2020-25577"]
phying_url: "https://phying.com/item/4444"
lang: en
---

# Bad Neighbor on FreeBSD: IPv6 Router Advertisement Vulnerabilities in rtsold (CVE-2020-25577)

## Summary

Details of four vulnerabilities in FreeBSD's rtsold(8) IPv6 router solicitation daemon, the worst allowing remote code execution as root from the same link; fixed in FreeBSD-SA-20:32.rtsold.

## Intelligence Metadata

- **Sources:** blog.quarkslab.com
- **Published:** 2021-01-27T23:00:00Z
- **Original:** https://blog.quarkslab.com/bad-neighbor-on-freebsd-ipv6-router-advertisement-vulnerabilities-in-rtsold-cve-2020-25577.html
- **Phying News:** https://phying.com/item/4444