VxWorks 6.x < 6.9.4 Multiple Vulnerabilities (URGENT/11)

critical Nessus Network Monitor Plugin ID 701084
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 host is running VxWorks embedded Operating System that is affected by multiple attack vectors.

Description

The version of VxWorks installed on the remote host is 6.x, prior to 6.9.4, and is affected by multiple vulnerabilities :

- A specially crafted TCP-segment with the URG-flag set may cause overflow of the buffer passed to recv(), recvfrom() or recvmsg() socket routines. (CVE-2019-12255)
- A specially crafted IPv4 packet, containing invalid encoded SSRR/LSRR options, may cause call-stack overflow. No specific services beyond IPv4 protocol support is required. (CVE-2019-12257)

Solution

Update to VxWorks version 6.9.4 or later.

See Also

https://www.tenable.com/blog/critical-vulnerabilities-dubbed-urgent11-place-devices-running-vxworks-at-risk-of-rce-attacks

https://armis.com/urgent11

https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11

Plugin Details

Severity: Critical

ID: 701084

Family: IoT

Published: 7/29/2019

Updated: 7/29/2019

Dependencies: 5622

Risk Information

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 7/19/2019

Vulnerability Publication Date: 7/19/2019

Reference Information

CVE: CVE-2019-12255, CVE-2019-12257