F5 Networks BIG-IP : OpenSSL vulnerability (K23512141)

high Nessus Plugin ID 94449

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Synopsis

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

Description

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c. (CVE-2016-2179)

Impact

An attacker can send a fragmented, incomplete message followed by a 'retransmission' message. In this case, the system accepts the retransmission message but the queue retains the original fragments, which consumes system resources. By repeating this process many times, the attacker can cause resource exhaustion.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K23512141.

Plugin Details

Severity: High

ID: 94449

File Name: f5_bigip_SOL23512141.nasl

Version: 2.10

Type: local

Family: F5 Networks Local Security Checks

Published: 11/1/2016

Updated: 3/9/2020

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 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_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, cpe:/h:f5:big-ip_protocol_security_manager

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/31/2016

Vulnerability Publication Date: 9/16/2016

Reference Information

CVE: CVE-2016-2179

Detections

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