Out-of-Bounds Access Vulnerability in netfilter's nf_tables
CVE-2023-6040

7.8HIGH

Key Information:

Vendor

The Linux Organization

Status
Linux
Vendor
CVE Published:
12 January 2024

What is CVE-2023-6040?

An out-of-bounds access vulnerability has been identified in the netfilter component of the Linux Kernel. This vulnerability arises from inadequate checks when creating new netfilter tables, specifically within the nf_tables_newtable function. Attackers can exploit this flaw by supplying invalid nf_tables family values, which may lead to unauthorized access to out-of-bounds memory regions. This could compromise system integrity and potentially allow execution of arbitrary code in the kernel context. Immediate patching and implementation of best security practices are recommended to mitigate the risk.

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Affected Version(s)

linux Linux 0 < 5.18-rc1

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6040
issue-tracking
https://www.openwall.com/lists/oss-security/2024/01/12/1
mailing-list
http://www.openwall.com/lists/oss-security/2024/01/12/1

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lin Ma from Ant Security Light-Year Lab & ZJU
JSON
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