Heap-based buffer overflow in VxWorks - CVE-2021-29998
Published: April 13, 2022
Vulnerability identifier: #VU62291
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2021-29998
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in dhcp client. A remote attacker can pass specially crafted data to the application, 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.
Affected software
VxWorks
Module Q12DCCPU-V
SINAMICS PERFECT HARMONY GH180 Drives
Module Q12DCCPU-V
SINAMICS PERFECT HARMONY GH180 Drives
How to mitigate CVE-2021-29998
Install updates from vendor's website.
VxWorks - update to 6.5
Module Q12DCCPU-V - update to 24032
SINAMICS PERFECT HARMONY GH180 Drives - update to 2022
Module Q12DCCPU-V - update to 24032
SINAMICS PERFECT HARMONY GH180 Drives - update to 2022