CVE-2022-2663

kernel: netfilter: nf_conntrack_irc message handling issue

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

Se ha encontrado un problema en el kernel de Linux en la función nf_conntrack_irc en el que el manejo de los mensajes puede confundirse y hacerlos coincidir incorrectamente. Se ha encontrado un problema en el kernel de Linux en nf_conntrack_irc donde el manejo de mensajes puede confundirse y coincidir incorrectamente con el mensaje

A flaw was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and it incorrectly matches on the message. An attacker could exploit this vulnerability to bypass firewall when users are using unencrypted IRC with nf_conntrack_irc configured.

*Credits: N/A

CVSS Scores

NISTv3.1 5.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-08-04 CVE Reserved
2022-09-01 CVE Published
2024-03-24 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-923: Improper Restriction of Communication Channel to Intended Endpoints

CAPEC

References (9)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html	Mailing List
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html	Mailing List
https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl%40dgl.cx/T
https://www.openwall.com/lists/oss-security/2022/08/30/1	Mailing List

URL	Date	SRC
https://dgl.cx/2022/08/nat-again-irc-cve-2022-2663	2024-08-03
https://www.youtube.com/watch?v=WIq-YgQuYCA	2024-08-03

URL	Date	SRC

URL	Date	SRC
https://www.debian.org/security/2022/dsa-5257	2023-02-12
https://access.redhat.com/security/cve/CVE-2022-2663	2024-02-07
https://bugzilla.redhat.com/show_bug.cgi?id=2123056	2024-02-07

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"				-		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected