CVE-2019-5892
6.5 · MEDIUMOverview
CVE-2019-5892 is a medium-severity vulnerability affecting frrouting frrouting. It was published on January 10, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and the BGP session was closed.
Remediation
Check the references section for vendor advisories and patches from frrouting. Update frrouting to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| frrouting | frrouting | 2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2019-5892?
CVE-2019-5892 is a medium-severity vulnerability affecting frrouting frrouting. It was published on January 10, 2019 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
How severe is CVE-2019-5892?
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2019-5892?
Check the references section for vendor advisories and patches from frrouting. Update frrouting to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-5892?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-5892 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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