Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 905321 (CVE-2023-28450) - <net-dns/dnsmasq-2.90: excessive EDNS.0 UDP packet size limit
Summary: <net-dns/dnsmasq-2.90: excessive EDNS.0 UDP packet size limit
Status: CONFIRMED
Alias: CVE-2023-28450
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor
Assignee: Gentoo Security
URL: https://thekelleys.org.uk/gitweb/?p=d...
Whiteboard: B4 [glsa+ cleanup]
Keywords:
Depends on:
Blocks:
 
Reported: 2023-04-29 19:31 UTC by John Helmert III
Modified: 2024-12-07 11:28 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2023-04-29 19:31:18 UTC 
CVE-2023-28450:

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.

"Set the default maximum DNS UDP packet size to 1232.

http://www.dnsflagday.net/2020/ refers.

Thanks to Xiang Li for the prompt."

Please bump to 2.90.
Comment 1 Larry the Git Cow gentoo-dev 2024-12-07 11:27:24 UTC 
The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=7bad5fd969474919531a146d1ebfdbce318f6125

commit 7bad5fd969474919531a146d1ebfdbce318f6125
Author:     GLSAMaker <glsamaker@gentoo.org>
AuthorDate: 2024-12-07 11:27:15 +0000
Commit:     Hans de Graaff <graaff@gentoo.org>
CommitDate: 2024-12-07 11:27:23 +0000

    [ GLSA 202412-10 ] Dnsmasq: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/867322
    Bug: https://bugs.gentoo.org/905321
    Bug: https://bugs.gentoo.org/924448
    Signed-off-by: GLSAMaker <glsamaker@gentoo.org>
    Signed-off-by: Hans de Graaff <graaff@gentoo.org>

 glsa-202412-10.xml | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)