Heap-based buffer overflow in VxWorks - CVE-2019-12257
Published: July 31, 2019
Vulnerability identifier: #VU19579
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-12257
CWE-ID: CWE-122
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Wind River Systems, Inc.
Affected software:
VxWorks
VxWorks
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within DHCP client implementation when processing DHCP packets. A remote attacker with access local network can send specially crafted DHCP packets to the affected system during system booting, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2019-12257
Install updates from vendor's website.
Vulnerability was fixed only in VxWorks 6.9 (version 6.9.4).