CVE-2019-5892

Sažetak

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.

Reference

https://frrouting.org/community/security/cve-2019-5892.html
https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a
https://github.com/FRRouting/frr/releases/tag/frr-3.0.4
https://github.com/FRRouting/frr/releases/tag/frr-4.0.1
https://github.com/FRRouting/frr/releases/tag/frr-5.0.2
https://github.com/FRRouting/frr/releases/tag/frr-6.0.2
https://lists.frrouting.org/pipermail/frog/2019-January/000404.html

CVSS

Base:	4.0
Impact:	2.9
Exploitability:	8.0

Pristup

Vektor	Složenost	Autentikacija
NETWORK	LOW	SINGLE

Impact

Povjerljivost	Cjelovitost	Dostupnost
NONE	NONE	PARTIAL

CVSS vektor

AV:N/AC:L/Au:S/C:N/I:N/A:P

Zadnje važnije ažuriranje

24-08-2020 - 17:37

Objavljeno

10-01-2019 - 17:29