National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-5892 Detail

Current 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.

Source:  MITRE
Description Last Modified:  01/10/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 4.0 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://frrouting.org/community/security/cve-2019-5892.html Vendor Advisory
https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a Patch Third Party Advisory
https://github.com/FRRouting/frr/releases/tag/frr-3.0.4 Release Notes Third Party Advisory
https://github.com/FRRouting/frr/releases/tag/frr-4.0.1 Release Notes Third Party Advisory
https://github.com/FRRouting/frr/releases/tag/frr-5.0.2 Release Notes Third Party Advisory
https://github.com/FRRouting/frr/releases/tag/frr-6.0.2 Release Notes Third Party Advisory
https://lists.frrouting.org/pipermail/frog/2019-January/000404.html Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
2.0
Up to (including)
2.0.2
 cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
3.0
Up to (excluding)
3.0.4
 cpe:2.3:a:frrouting:frrouting:4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
5.0
Up to (excluding)
5.0.2
 cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
6.0
Up to (excluding)
6.0.2


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-5892
NVD Published Date:
01/10/2019
NVD Last Modified:
02/15/2019