What is the severity of ZDI-20-949?

The severity of ZDI-20-949 is classified as high, as it allows local attackers to escalate privileges.

How do I fix ZDI-20-949?

To fix ZDI-20-949, update your FreeBSD Kernel to the latest version that addresses this vulnerability.

What systems are affected by ZDI-20-949?

ZDI-20-949 affects installations of the FreeBSD Kernel.

Who can exploit ZDI-20-949?

Only local attackers with the ability to execute low-privileged code can exploit ZDI-20-949.

What type of vulnerability is ZDI-20-949?

ZDI-20-949 is a privilege escalation vulnerability in the FreeBSD Kernel.

Vulnerability/
ZDI-20-949

high

8.8

4/8/2024

ZDI-20-949: FreeBSD Kernel sendmsg System Call Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of FreeBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of arguments to the sendmsg system call. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

Affected Software	Affected Version	How to fix
FreeBSD Kernel

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of ZDI-20-949?
The severity of ZDI-20-949 is classified as high, as it allows local attackers to escalate privileges.
How do I fix ZDI-20-949?
To fix ZDI-20-949, update your FreeBSD Kernel to the latest version that addresses this vulnerability.
What systems are affected by ZDI-20-949?
ZDI-20-949 affects installations of the FreeBSD Kernel.
Who can exploit ZDI-20-949?
Only local attackers with the ability to execute low-privileged code can exploit ZDI-20-949.
What type of vulnerability is ZDI-20-949?
ZDI-20-949 is a privilege escalation vulnerability in the FreeBSD Kernel.

agent/type
agent/softwarecombine
collector/zdi-advisory
source/ZDI
alias/ZDI-20-949
alias/ZDI-CAN-11543
alias/CVE-2020-7460
agent/software-canonical-lookup
agent/severity
agent/references
agent/title
agent/event
agent/description
agent/tags
agent/source
vendor/freebsd
canonical/freebsd kernel

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.

Frequently Asked Questions

What is the severity of ZDI-20-949?
The severity of ZDI-20-949 is classified as high, as it allows local attackers to escalate privileges.
How do I fix ZDI-20-949?
To fix ZDI-20-949, update your FreeBSD Kernel to the latest version that addresses this vulnerability.
What systems are affected by ZDI-20-949?
ZDI-20-949 affects installations of the FreeBSD Kernel.
Who can exploit ZDI-20-949?
Only local attackers with the ability to execute low-privileged code can exploit ZDI-20-949.
What type of vulnerability is ZDI-20-949?
ZDI-20-949 is a privilege escalation vulnerability in the FreeBSD Kernel.