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: 2023-05-16 19:17 UTC (History)
49 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A firewall flaw that can bypass the Linux kernel’s Netfilter functionality was found in how a user handles unencrypted IRC with nf_conntrack_irc configured. This flaw allows a remote user to gain unauthorized access to the system.
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

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
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