What is ZDI-23-899 vulnerability?

ZDI-23-899 is a privilege escalation vulnerability in Linux Kernel's nftables component, allowing local attackers to escalate their privileges.

How severe is the ZDI-23-899 vulnerability?

ZDI-23-899 has a severity score of 7.8, indicating a high severity level.

How can the ZDI-23-899 vulnerability be exploited?

The ZDI-23-899 vulnerability can be exploited by executing low-privileged code on the target system.

What software is affected by the ZDI-23-899 vulnerability?

The ZDI-23-899 vulnerability affects Linux Kernel.

Where can I find more information about the ZDI-23-899 vulnerability?

You can find more information about the ZDI-23-899 vulnerability in the following references: [Reference 1], [Reference 2], [Reference 3].

Vulnerability/
ZDI-23-899

high

7.8

6/7/2023

16/1/2024

ZDI-23-899: (Pwn2Own) Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability

First published: Thu Jul 06 2023(Updated: )

This vulnerability allows local attackers to escalate privileges on affected installations of Linux 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 nft_chains. The issue results from the lack of validating the status of a chain while processing lookup on the chain. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.

Affected Software	Affected Version	How to fix

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Frequently Asked Questions

What is ZDI-23-899 vulnerability?
ZDI-23-899 is a privilege escalation vulnerability in Linux Kernel's nftables component, allowing local attackers to escalate their privileges.
How severe is the ZDI-23-899 vulnerability?
ZDI-23-899 has a severity score of 7.8, indicating a high severity level.
How can the ZDI-23-899 vulnerability be exploited?
The ZDI-23-899 vulnerability can be exploited by executing low-privileged code on the target system.
What software is affected by the ZDI-23-899 vulnerability?
The ZDI-23-899 vulnerability affects Linux Kernel.
Where can I find more information about the ZDI-23-899 vulnerability?
You can find more information about the ZDI-23-899 vulnerability in the following references: [Reference 1], [Reference 2], [Reference 3].

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agent/type
collector/zdi-advisory
source/ZDI
alias/ZDI-23-899
alias/ZDI-CAN-20717
alias/CVE-2023-31248
agent/software-canonical-lookup
collector/zdi-published
vendor/linux
canonical/linux kernel

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