F5 Networks BIG-IP : OpenSSH vulnerabilities (K15780)

medium Nessus Plugin ID 91617

Synopsis

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

Description

CVE-2014-2653 The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.

CVE-2014-2532 sshd in OpenSSH before 6.6 does not properly support wildcards on AcceptEnv lines in sshd_config, which allows remote attackers to bypass intended environment restrictions by using a substring located before a wildcard character.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K15780.

See Also

https://support.f5.com/csp/article/K15780

Plugin Details

Severity: Medium

ID: 91617

File Name: f5_bigip_SOL15780.nasl

Version: 2.8

Type: local

Published: 6/15/2016

Updated: 3/10/2021

Risk Information

VPR

Risk Factor: Low

Score: 3.7

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Temporal Vector: E:ND/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.7

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

Temporal Vector: E:X/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_wan_optimization_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: 11/3/2014

Vulnerability Publication Date: 3/18/2014

Reference Information

CVE: CVE-2014-2532, CVE-2014-2653

BID: 66355, 66459