CVEvulnerability

CVE-2019-5892

6.5 MEDIUM Published 2019-01-10 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-01-10
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
6.5 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
CWE-436

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.

Affected configurations

• frrouting frrouting (>= 2.0 <= 2.0.2) • frrouting frrouting (>= 3.0 < 3.0.4) • frrouting frrouting (>= 5.0 < 5.0.2) • frrouting frrouting (>= 6.0 < 6.0.2) • frrouting frrouting 4.0

Related

Weakness · CWE (1)

  • CWE-436 Interpretation Conflict weakness

References