// For flags

CVE-2023-42753

Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

Se encontró una vulnerabilidad de indexación de matrices en el subsistema netfilter del kernel de Linux. Una macro faltante podría provocar un error de cálculo del desplazamiento de la matriz `h->nets`, proporcionando a los atacantes la primitiva de incrementar/disminuir arbitrariamente un búfer de memoria fuera de límites. Este problema puede permitir que un usuario local bloquee el sistema o potencialmente aumente sus privilegios en el sistema.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-09-13 CVE Reserved
  • 2023-09-25 CVE Published
  • 2023-11-29 EPSS Updated
  • 2024-02-27 First Exploit
  • 2024-09-13 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
References (32)
URL Date SRC
URL Date SRC
https://access.redhat.com/errata/RHSA-2023:7370 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7379 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7382 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7389 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7411 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7418 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7539 2024-02-27
https://access.redhat.com/errata/RHSA-2023:7558 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0089 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0113 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0134 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0340 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0346 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0347 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0371 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0376 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0378 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0402 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0403 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0412 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0461 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0562 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0563 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0593 2024-02-27
https://access.redhat.com/errata/RHSA-2024:0999 2024-02-27
https://access.redhat.com/security/cve/CVE-2023-42753 2024-02-27
https://bugzilla.redhat.com/show_bug.cgi?id=2239843 2024-02-27
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
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Linux Kernel
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< 6.6
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-
Affected
Redhat
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Enterprise Linux
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7.0
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-
Affected
Redhat
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Enterprise Linux
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8.0
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-
Affected
Redhat
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Enterprise Linux
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9.0
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-
Affected
Debian
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Debian Linux
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10.0
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-
Affected