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cnvdChina National Vulnerability DatabaseCNVD-2021-65650
HistoryAug 26, 2021 - 12:00 a.m.

F5 BIG-IP Advanced WAF and ASM WebSocket Denial of Service Vulnerability

2021-08-2600:00:00
China National Vulnerability Database
www.cnvd.org.cn
7

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

F5 BIG-IP is an application delivery platform from F5 that integrates network traffic orchestration, load balancing, intelligent DNS, remote access policy management, etc. A denial of service vulnerability exists in the F5 BIG-IP Advanced WAF and ASM WebSocket, which originates from the BIG-IP AWAF/ASM Virtual The vulnerability is caused when a Websocket profile is configured on the BIG-IP AWAF/ASM Virtual server, and an undisclosed request could cause the bd to terminate, which could cause a traffic disruption when the BD process of BIG-IP AWAF/ASM restarts. A remote attacker could use this vulnerability to launch a denial of service against BIG-IP.

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

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