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F5 Networks BIG-IP : Linux kernel vulnerability (K20934447)

high Nessus Plugin ID 123136

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Synopsis

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

Description

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel versions 2.6.x, 3.10.x and 4.14.x are believed to be vulnerable. (CVE-2018-14634)

Impact

The default, standard, and recommended configuration for the BIG-IP configuration is to allow only root user access to the CLI. Therefore, local privilege escalations are mitigated by default. Any unprivileged local user may acquire elevated privileges.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K20934447.

See Also

https://my.f5.com/manage/s/article/K20934447

Plugin Details

Severity: High

ID: 123136

File Name: f5_bigip_SOL20934447.nasl

Version: 1.9

Type: local

Published: 3/27/2019

Updated: 11/2/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2018-14634

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

Temporal Vector: CVSS:3.0/E:P/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:/a:f5:big-ip_webaccelerator, 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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/22/2018

Vulnerability Publication Date: 9/25/2018

Reference Information

CVE: CVE-2018-14634