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F5 Networks BIG-IP : HTTP/2 ALPN vulnerability (K94563344)

high Nessus Plugin ID 124426

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The Traffic Management Microkernel (TMM)may restart when a virtual server has an HTTP/2 profile with Application Layer Protocol Negotiation (ALPN)enabled and it processes traffic where the ALPN extension size is zero.(CVE-2019-6619)

Impact

BIG-IP

The Traffic Management Microkernel (TMM) generates a core file and restarts. If configured as part of a high availability (HA) device group, the BIG-IP system fails over to the peer device. For BIG-IP versions 13.1.0 and later, the ALPN setting is enabled on the HTTP/2 profile by default.

Enterprise Manager, BIG-IQ, F5 iWorkflow, Traffix SDC

There is no impact on theseF5 productsand they are not affected by this vulnerability.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K94563344.

See Also

https://my.f5.com/manage/s/article/K94563344

Plugin Details

Severity: High

ID: 124426

File Name: f5_bigip_SOL94563344.nasl

Version: 1.5

Type: local

Published: 5/1/2019

Updated: 11/3/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2019-6619

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:f5:big-ip_local_traffic_manager, cpe:/h:f5:big-ip

Required KB Items: Host/local_checks_enabled, Settings/ParanoidReport, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2019

Vulnerability Publication Date: 5/3/2019

Reference Information

CVE: CVE-2019-6619