CVE-2019-5892

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.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:frrouting:frrouting::::::::
	cpe:2.3:a:frrouting:frrouting::::::::
	cpe:2.3:a:frrouting:frrouting:4.0:::::::*
	cpe:2.3:a:frrouting:frrouting::::::::
	cpe:2.3:a:frrouting:frrouting::::::::

Information

Published : 2019-01-10 09:29

Updated : 2020-08-24 10:37

NVD link : CVE-2019-5892

Mitre link : CVE-2019-5892

JSON object : View

CWE

CWE-436

Interpretation Conflict

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Products Affected

frrouting

frrouting

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