Vulnerability in Frrouting
CVE-2019-5892
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Frrouting — versions 4.0
Weakness classification (CWE)
References
- github.com/FRRouting/frr/releases/tag/frr-3.0.4 (Third Party Advisory, Release Notes)
- lists.frrouting.org/pipermail/frog/2019-January/000404.html (Patch, Vendor Advisory)
- github.com/FRRouting/frr/releases/tag/frr-5.0.2 (Third Party Advisory, Release Notes)
- github.com/FRRouting/frr/releases/tag/frr-6.0.2 (Third Party Advisory, Release Notes)
- github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a (Patch, Third Party Advisory)
- frrouting.org/community/security/cve-2019-5892.html (Vendor Advisory)
- github.com/FRRouting/frr/releases/tag/frr-4.0.1 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2019-5892?
- CVE-2019-5892 is a medium-severity vulnerability in Frrouting, classified under CWE-436. CVSS score: 6.5/10. Published 2019-01-10.
- How severe is CVE-2019-5892?
- Medium severity. CVSS v3 base score is 6.5 out of 10.