Medium severity6.5OSV Advisory· Published Jan 10, 2019· Updated Jun 17, 2026
CVE-2019-5892
CVE-2019-5892
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.
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Affected products
2Patches
Vulnerability mechanics
References
7- github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705anvdPatchThird Party Advisory
- lists.frrouting.org/pipermail/frog/2019-January/000404.htmlnvdPatchVendor Advisory
- frrouting.org/community/security/cve-2019-5892.htmlnvdVendor Advisory
- github.com/FRRouting/frr/releases/tag/frr-3.0.4nvdRelease NotesThird Party Advisory
- github.com/FRRouting/frr/releases/tag/frr-4.0.1nvdRelease NotesThird Party Advisory
- github.com/FRRouting/frr/releases/tag/frr-5.0.2nvdRelease NotesThird Party Advisory
- github.com/FRRouting/frr/releases/tag/frr-6.0.2nvdRelease NotesThird Party Advisory
News mentions
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