F5 Networks BIG-IP : OpenSSH vulnerability (K24324390)

medium Nessus Plugin ID 119733

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Synopsis

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

Description

authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process. (CVE-2016-10011)

Impact

A locally authenticated attacker may be able to exploit this vulnerability and obtain sensitive key information.

Note : No such leak has been observed in practice for normal-sized keys, nor does a leak to the child processes directly expose key material to unprivileged users.

Solution

Upgrade to one of the non-vulnerable versions listed in the F5 Solution K24324390.

Plugin Details

Severity: Medium

ID: 119733

File Name: f5_bigip_SOL24324390.nasl

Version: 1.5

Type: local

Family: F5 Networks Local Security Checks

Published: 12/18/2018

Updated: 3/27/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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: 1/26/2017

Vulnerability Publication Date: 1/5/2017

Reference Information

CVE: CVE-2016-10011

Detections

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