CVE-2023-1206

kernel: hash collisions in the IPv6 connection lookup table

Severity Score

5.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

*Credits: N/A

CVSS Scores

NISTv3.1 5.7

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-03-06 CVE Reserved
2023-06-30 CVE Published
2024-10-04 EPSS Updated
2024-10-15 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-327: Use of a Broken or Risky Cryptographic Algorithm
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (7)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html	Mailing List
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html	Mailing List
https://security.netapp.com/advisory/ntap-20230929-0006

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2175903	2023-11-14
https://www.debian.org/security/2023/dsa-5480	2024-01-11
https://www.debian.org/security/2023/dsa-5492	2024-01-11
https://access.redhat.com/security/cve/CVE-2023-1206	2023-11-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.5 Search vendor "Linux" for product "Linux Kernel" and version " < 6.5"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				38 Search vendor "Fedoraproject" for product "Fedora" and version "38"		-		Affected