#VU19582 Buffer overflow in VxWorks - CVE-2019-12261
Published: July 31, 2019
Vulnerability identifier: #VU19582
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-12261
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
VxWorks
VxWorks
Software vendor:
Wind River Systems, Inc.
Wind River Systems, Inc.
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when sending responses to TCP requests due to TCP Urgent Pointer state confusion during connect() to a remote host. A remote attacker can trigger the system to initiate TCP connection to a malicious host, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.
The vulnerability is fixed in:
VxWorks 6.9: update to version 6.9.4.12
VxWorks 7: update to versions 2.1.0.0 or 1.4.3.1.
VxWorks 6.9: update to version 6.9.4.12
VxWorks 7: update to versions 2.1.0.0 or 1.4.3.1.