F5 Networks BIG-IP : Linux kernel vulnerability (K68852819)

Medium Nessus Plugin ID 99921

Synopsis

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

Description

Race condition in the L2TPv3 IP Encapsulation feature in the Linux kernel before 4.8.14 allows local users to gain privileges or cause a denial of service (use-after-free) by making multiple bind system calls without properly ascertaining whether a socket has the SOCK_ZAPPED status, related to net/l2tp/l2tp_ip.c and net/l2tp/l2tp_ip6.c. (CVE-2016-10200)

Impact

An attacker with administrative command line access may be able to performa use-after-free exploit to cause a denial of service (DoS)or gain system privileges.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K68852819.

See Also

https://support.f5.com/csp/article/K68852819

Plugin Details

Severity: Medium

ID: 99921

File Name: f5_bigip_SOL68852819.nasl

Version: 3.9

Type: local

Published: 2017/05/02

Updated: 2019/01/04

Dependencies: 76940

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.9

Temporal Score: 5.1

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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_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, Host/BIG-IP/hotfix, Host/BIG-IP/modules, Host/BIG-IP/version, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/05/01

Reference Information

CVE: CVE-2016-10200