F5 Networks BIG-IP : Linux kernel TTY vulnerability (K15319)

medium Nessus Plugin ID 78173
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the 'LECHO & !OPOST' case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings. (CVE-2014-0196)

Impact

Local users may be able to cause a denial-of-service (DoS) or gain privileges by triggering a race condition.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K15319.

See Also

https://support.f5.com/csp/article/K15319

Plugin Details

Severity: Medium

ID: 78173

File Name: f5_bigip_SOL15319.nasl

Version: 1.11

Type: local

Published: 10/10/2014

Updated: 1/4/2019

Dependencies: f5_bigip_detect.nbin

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

Temporal Vector: E:POC/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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/5/2014

Exploitable With

CANVAS (CANVAS)

Core Impact

Reference Information

CVE: CVE-2014-0196

BID: 67199, 67282