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F5 Networks BIG-IP : F5 iRules 'RESOLV::lookup' command vulnerability (K03125360)

high Nessus Plugin ID 142318

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Synopsis

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

Description

Usingthe RESOLV::lookup command within an iRule may cause the Traffic Management Microkernel (TMM) to generate a core file and restart. This issue occurs when data exceeding the maximum limit of a host name passesto the RESOLV::lookup command. (CVE-2020-5941)

Impact

The BIG-IP system may temporarily fail to process traffic as it recovers from aTMMrestart. If the BIG-IP system is configured for high availability (HA), the system fails over to a peer system.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K03125360.

See Also

https://my.f5.com/manage/s/article/K03125360

Plugin Details

Severity: High

ID: 142318

File Name: f5_bigip_SOL03125360.nasl

Version: 1.5

Type: local

Published: 11/3/2020

Updated: 10/18/2023

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-2020-5941

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_access_policy_manager, cpe:/a:f5:big-ip_advanced_firewall_manager, cpe:/a:f5:big-ip_application_acceleration_manager, cpe:/a:f5:big-ip_application_security_manager, cpe:/a:f5:big-ip_application_visibility_and_reporting, cpe:/a:f5:big-ip_domain_name_system, cpe:/a:f5:big-ip_global_traffic_manager, cpe:/a:f5:big-ip_link_controller, cpe:/a:f5:big-ip_local_traffic_manager, cpe:/a:f5:big-ip_policy_enforcement_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: 11/2/2020

Vulnerability Publication Date: 11/5/2020

Reference Information

CVE: CVE-2020-5941