CVE-2018-5381

Published: 13 February 2018

The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.

Notes

Author	Note
mdeslaur	this is Quagga-2018-1975

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
quagga Launchpad, Ubuntu, Debian	artful	Released (1.1.1-3ubuntu0.2)
	trusty	Released (0.99.22.4-3ubuntu1.5)
	upstream	Released (1.2.3)
	xenial	Released (0.99.24.1-2ubuntu1.4)

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›