Advisory Details

August 27th, 2024

Linux Kernel Netfilter Conntrack Type Confusion Information Disclosure Vulnerability

ZDI-24-1182
ZDI-CAN-24591

CVE ID
CVSS SCORE 6.5, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
AFFECTED VENDORS Linux
AFFECTED PRODUCTS Kernel
VULNERABILITY DETAILS

This vulnerability allows local attackers to disclose sensitive information 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 implementation of connection tracking. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

ADDITIONAL DETAILS Linux has issued an update to correct this vulnerability. More details can be found at:
https://patchwork.kernel.org/project/netdevbpf/patch/20240717215214.225394-2-pablo@netfilter.org/
DISCLOSURE TIMELINE
  • 2024-07-12 - Vulnerability reported to vendor
  • 2024-08-27 - Coordinated public release of advisory
  • 2024-08-27 - Advisory Updated
CREDIT HexRabbit (@h3xr4bb1t) from DEVCORE Research Team
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