Bug 2178948 (CVE-2023-28450) - CVE-2023-28450 dnsmasq: default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232
Summary: CVE-2023-28450 dnsmasq: default maximum EDNS.0 UDP packet size was set to 409...
Keywords:
Status: NEW
Alias: CVE-2023-28450
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2178954 2180293 2180294
Blocks: 2178946
TreeView+ depends on / blocked
 
Reported: 2023-03-16 09:13 UTC by Marian Rehak
Modified: 2024-05-23 17:37 UTC (History)
13 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Dnsmasq. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:6524 0 None None None 2023-11-07 08:18:31 UTC
Red Hat Product Errata RHSA-2023:7046 0 None None None 2023-11-14 15:19:19 UTC
Red Hat Product Errata RHSA-2024:1544 0 None None None 2024-03-27 15:05:26 UTC
Red Hat Product Errata RHSA-2024:1545 0 None None None 2024-03-27 15:05:53 UTC

Description Marian Rehak 2023-03-16 09:13:07 UTC 
An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.

Reference:

https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=blob;f=CHANGELOG
https://capec.mitre.org/data/definitions/495.html
https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=eb92fb32b746f2104b0f370b5b295bb8dd4bd5e5
https://thekelleys.org.uk/dnsmasq/doc.html
Comment 1 Sandipan Roy 2023-03-16 09:32:40 UTC 
Created dnsmasq tracking bugs for this issue:

Affects: fedora-all [bug 2178954]
Comment 9 errata-xmlrpc 2023-11-07 08:18:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:6524 https://access.redhat.com/errata/RHSA-2023:6524
Comment 10 errata-xmlrpc 2023-11-14 15:19:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:7046 https://access.redhat.com/errata/RHSA-2023:7046
Comment 12 errata-xmlrpc 2024-03-27 15:05:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:1544 https://access.redhat.com/errata/RHSA-2024:1544
Comment 13 errata-xmlrpc 2024-03-27 15:05:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:1545 https://access.redhat.com/errata/RHSA-2024:1545
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