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

medium Nessus Plugin ID 78173

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

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