F5 Networks BIG-IP : OpenSSH vulnerability (K17461)

Medium Nessus Plugin ID 97560

Synopsis

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

Description

The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window. (CVE-2015-5352)

Impact

A remote attacker may be able to bypass intended access restrictions.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K17461.

See Also

https://support.f5.com/csp/article/K17461

Plugin Details

Severity: Medium

ID: 97560

File Name: f5_bigip_SOL17461.nasl

Version: 3.5

Type: local

Published: 2017/03/07

Updated: 2019/01/04

Dependencies: 76940

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/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, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/10/28

Reference Information

CVE: CVE-2015-5352

BID: 75525