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* [Bug network/31413] New: getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen
@ 2024-02-26 10:42 manuel at mozilla dot com
2024-02-26 10:43 ` [Bug network/31413] " manuel at mozilla dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: manuel at mozilla dot com @ 2024-02-26 10:42 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31413
Bug ID: 31413
Summary: getaddrinfo: DNS resolution fails if a CNAME target
begins with a hyphen
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: manuel at mozilla dot com
Target Milestone: ---
Clone of Firefox Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1870497
> User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0
>
> Steps to reproduce:
>
> Set up the following DNS records:
>
> www1.test A 192.0.2.1
> _www2.test A 192.0.2.1
> www3._www3.test A 192.0.2.1
> www_4.test A 192.0.2.1
> -www5.test A 192.0.2.1
> www6.-www6.test A 192.0.2.1
>
> cname1.test CNAME www1.test
> cname2.test CNAME _www2.test
> cname3.test CNAME www3._www3.test
> cname4.test CNAME www_4.test
> cname5.test CNAME -www5.test
> cname6.test CNAME www6.-www6.test
>
> Open all of the "cname1" to "cname6" hostnames as URLs in Firefox.
>
> Actual results:
>
> The "cname5" hostname returns "Server Not Found".
>
> The other names can be resolved and Firefox will connect to them.
>
> Expected results:
>
> All of "cname1" to "cname6" can be resolved and Firefox will connect to them.
>
> The hostnames used in CNAME targets (or chains of CNAME targets) should not be subject to the same validation as the hostname in the URL.
In Firefox on Linux we use glibc getaddrinfo to resolve hostnames. I think
fixing this in glibc would be best.
--
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^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug network/31413] getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen 2024-02-26 10:42 [Bug network/31413] New: getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen manuel at mozilla dot com @ 2024-02-26 10:43 ` manuel at mozilla dot com 2024-02-26 21:31 ` fw at deneb dot enyo.de 2024-02-27 11:07 ` fw at deneb dot enyo.de 2 siblings, 0 replies; 4+ messages in thread From: manuel at mozilla dot com @ 2024-02-26 10:43 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=31413 Manuel Bucher <manuel at mozilla dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://bugzilla.mozilla.or | |g/show_bug.cgi?id=1870497 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug network/31413] getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen 2024-02-26 10:42 [Bug network/31413] New: getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen manuel at mozilla dot com 2024-02-26 10:43 ` [Bug network/31413] " manuel at mozilla dot com @ 2024-02-26 21:31 ` fw at deneb dot enyo.de 2024-02-27 11:07 ` fw at deneb dot enyo.de 2 siblings, 0 replies; 4+ messages in thread From: fw at deneb dot enyo.de @ 2024-02-26 21:31 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=31413 Florian Weimer <fw at deneb dot enyo.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fw at deneb dot enyo.de See Also| |https://sourceware.org/bugz | |illa/show_bug.cgi?id=12154 --- Comment #1 from Florian Weimer <fw at deneb dot enyo.de> --- On which glibc versions do you observe this? This should have been fixed under bug 12154. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug network/31413] getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen 2024-02-26 10:42 [Bug network/31413] New: getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen manuel at mozilla dot com 2024-02-26 10:43 ` [Bug network/31413] " manuel at mozilla dot com 2024-02-26 21:31 ` fw at deneb dot enyo.de @ 2024-02-27 11:07 ` fw at deneb dot enyo.de 2 siblings, 0 replies; 4+ messages in thread From: fw at deneb dot enyo.de @ 2024-02-27 11:07 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=31413 Florian Weimer <fw at deneb dot enyo.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |DUPLICATE See Also|https://sourceware.org/bugz | |illa/show_bug.cgi?id=12154 | Flags| |security- Status|UNCONFIRMED |RESOLVED --- Comment #2 from Florian Weimer <fw at deneb dot enyo.de> --- Per https://bugzilla.mozilla.org/show_bug.cgi?id=1870497#c7 this is already fixed in current glibc—it's a duplicate of bug 12154. *** This bug has been marked as a duplicate of bug 12154 *** -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-02-27 11:07 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2024-02-26 10:42 [Bug network/31413] New: getaddrinfo: DNS resolution fails if a CNAME target begins with a hyphen manuel at mozilla dot com 2024-02-26 10:43 ` [Bug network/31413] " manuel at mozilla dot com 2024-02-26 21:31 ` fw at deneb dot enyo.de 2024-02-27 11:07 ` fw at deneb dot enyo.de
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