Linux Kernel 5.10/5.15/6.1 Netfilter ipset Subsystem ip_set_hash_netportnet.c ip_set_hash_netportnet array index

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel 5.10/5.15/6.1. The impacted element is the function ip_set_hash_netportnet of the file net/netfilter/ipset/ip_set_hash_netportnet.c of the component Netfilter ipset Subsystem. Performing a manipulation results in array index. This vulnerability is known as CVE-2023-42753. Furthermore, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 5.10/5.15/6.1 (Operating System). It has been classified as critical. This affects the function ip_set_hash_netportnet of the file net/netfilter/ipset/ip_set_hash_netportnet.c of the component Netfilter ipset Subsystem. The manipulation with an unknown input leads to a array index vulnerability. CWE is classifying the issue as CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 09/23/2023. The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2023-42753 since 09/13/2023. Technical details and a public exploit are known.

The exploit is shared for download at seclists.org. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2023-2434). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Open Source CentOS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM Spectrum Protect
  • Open Source Linux Kernel
  • IGEL OS
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.3

VulDB Base Score: 8.0
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Array index
CWE: CWE-129 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

09/13/2023 🔍
09/23/2023 +10 days 🔍
09/23/2023 +0 days 🔍
11/12/2025 +781 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: seclists.org
Status: Confirmed

CVE: CVE-2023-42753 (🔍)
GCVE (CVE): GCVE-0-2023-42753
GCVE (VulDB): GCVE-100-240225
CERT Bund: WID-SEC-2023-2434 - Linux Kernel: Schwachstelle ermöglicht Codeausführung

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/23/2023 07:25
Updated: 11/12/2025 08:53
Changes: 09/23/2023 07:25 (45), 10/14/2023 16:50 (1), 10/14/2023 16:58 (21), 08/26/2024 18:16 (16), 11/12/2025 08:53 (7)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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