ASA-2019-00502 – Wind River VxWorks: Handling of unsolicited Reverse ARP replies

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00502

Identifier(s)

ASA-2019-00502, CVE-2019-12262, V7NET-2427

Title

Handling of unsolicited Reverse ARP replies

Vendor(s)

Wind River

Product(s)

Wind River VxWorks

Affected version(s)

Wind River VxWorks 6 version 6.6
Wind River VxWorks 6 version 6.7
Wind River VxWorks 6 version 6.8
Wind River VxWorks 6 version 6.9 before 6.9.4.12
Wind River VxWorks 7 versions 2.x.x.x before 2.1.0.0
Wind River VxWorks 7 versions 1.x.x.x before 1.4.3.1

Fixed version(s)

Wind River VxWorks 6 version 6.9.4.12
Wind River VxWorks 7 version 2.1.0.0
Wind River VxWorks 7 version 1.4.3.1

Proof of concept

Unknown

Description

The RARP reception handler verifies that the packet is well formed, but fails to verify that the node has an ongoing RARP-transaction matching the received packet.

An attacker residing on the LAN can send reverse-ARP responses to the victim system to assign unicast IPv4 addresses to the target. The action will not cause any direct harm more than increased usage of RAM. However, the vulnerability may indirectly cause a network connectivity issue for the system on the LAN if the assigned IP addresses collide with other machines.

Technical details

Unknown

Credits

Ben Seri (Armis Labs)

Reference(s)

SECURITY ADVISORY: WIND RIVER TCP/IP STACK (IPNET) VULNERABILITIES
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/security-advisory-ipnet/security-advisory-ipnet.pdf

SECURITY VULNERABILITY RESPONSE INFORMATION – TCP/IP Network Stack (IPnet, Urgent/11)
https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/

CVE: CVE-2019-12262 - Wind River Support Network
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12262

URGENT/11 Information from the Research Team – Armis Labs
https://armis.com/urgent11/

Critical vulnerabilities to remotely compromise VxWorks, the most popular RTOS
https://go.armis.com/hubfs/White-papers/Urgent11%20Technical%20White%20Paper.pdf

Critical Zero Days Remotely Compromise the Most Popular Real-Time OS
https://i.blackhat.com/USA-19/Thursday/us-19-Seri-Critical-Zero-Days-Remotely-Compromise-The-Most-Popular-Real-Time-OS.pdf

CVE-2019-12262
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12262

CVE-2019-12262
https://nvd.nist.gov/vuln/detail/CVE-2019-12262

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Last modified: August 12, 2019

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