CVE-2019-5892

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

10/01/2019

Last modified:

24/08/2020

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.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:S/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.00 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

4.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:frrouting:frrouting::::::::	2.0 (including)	2.0.2 (including)
cpe:2.3:a:frrouting:frrouting::::::::	3.0 (including)	3.0.4 (excluding)
cpe:2.3:a:frrouting:frrouting::::::::	5.0 (including)	5.0.2 (excluding)
cpe:2.3:a:frrouting:frrouting::::::::	6.0 (including)	6.0.2 (excluding)
cpe:2.3:a:frrouting:frrouting:4.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2019-5892

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools