Bug 2123056 (CVE-2022-2663) - CVE-2022-2663 kernel: netfilter: nf_conntrack_irc message handling issue
Summary: CVE-2022-2663 kernel: netfilter: nf_conntrack_irc message handling issue
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-2663
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2123057 2124092 2124093 2124094 2124095
Blocks: 2123058
TreeView+ depends on / blocked
 
Reported: 2022-08-31 15:30 UTC by Pedro Sampaio
Modified: 2024-03-28 09:40 UTC (History)
50 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
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.
Clone Of:
Environment:
Last Closed: 2023-05-16 19:17:02 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2148 0 None None None 2023-05-09 07:11:41 UTC
Red Hat Product Errata RHSA-2023:2458 0 None None None 2023-05-09 07:50:41 UTC
Red Hat Product Errata RHSA-2023:2736 0 None None None 2023-05-16 08:05:03 UTC
Red Hat Product Errata RHSA-2023:2951 0 None None None 2023-05-16 08:33:52 UTC
Red Hat Product Errata RHSA-2024:0724 0 None None None 2024-02-07 16:29:18 UTC

Description Pedro Sampaio 2022-08-31 15:30:26 UTC 
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and it incorrectly matches on the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured.

References:

https://www.openwall.com/lists/oss-security/2022/08/30/1
https://lore.kernel.org/netfilter-devel/20220826045658.100360-1-dgl@dgl.cx/T/
Comment 1 Pedro Sampaio 2022-08-31 15:30:52 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2123057]
Comment 4 Justin M. Forbes 2022-09-20 14:07:40 UTC 
This was fixed for Fedora with the 5.19.9 stable kernel updates.
Comment 9 errata-xmlrpc 2023-05-09 07:11:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2148 https://access.redhat.com/errata/RHSA-2023:2148
Comment 10 errata-xmlrpc 2023-05-09 07:50:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2458 https://access.redhat.com/errata/RHSA-2023:2458
Comment 11 errata-xmlrpc 2023-05-16 08:04:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2736 https://access.redhat.com/errata/RHSA-2023:2736
Comment 12 errata-xmlrpc 2023-05-16 08:33:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:2951 https://access.redhat.com/errata/RHSA-2023:2951
Comment 13 Product Security DevOps Team 2023-05-16 19:16:58 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-2663
Comment 17 errata-xmlrpc 2024-02-07 16:29:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0724 https://access.redhat.com/errata/RHSA-2024:0724
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