I was about to file this same bug. After a few days of research, I found the following similar or related bug reports:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=525910 https://bugs.launchpad.net/ubuntu/+source/cups/+bug/763755 https://answers.launchpad.net/ubuntu/+source/cupsys/+question/7880 http://thismightbehelpful.blogspot.ca/2008/09/remote-access-to-cups-web-interface.html Note, the issue begins in 1.4.x versions of cups, <=1.3 should work fine, so a downgrade might be your desired course of action if that's a possibility for you. None of the solutions provided in those helped. In case you find this via google, let me save you some time and enumerate them here: -In cups.conf, add (or uncomment, or modify) a line at the end to read: ServerAlias * -In cups.conf, add (or uncomment, or modify) the entry for "<Location /admin>" to: Allow from all or Allow from [some ip here] -In cups.conf, add a line that reads: Listen 192.168.1.1:631 or Listen *:631 (or whatever port you want to use instead of 631) (with the IP you want to allow access to) The problem shows up as lines similar to the following in your cups error_log file: E [23/Nov/2015:15:35:28 -0500] Request from "localhost" using invalid Host: field "cups_local_host:631" The most relevant link was: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=530027 which traces the problem to this patch: https://bugzilla.redhat.com/attachment.cgi?id=335489 (direct link to msg: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=530027#56 ) Which was submitted to solve: https://security-tracker.debian.org/tracker/CVE-2009-0164 So with that info, I downloaded the sources on my fedora (fc17) machine, modified them, rebuilt the packages and installed, and everything works now as (I) intended. I have attached the patch I wrote which solves it for me, WARNING: this might introduce some security issues (related to CVE-2009-0164), which I didn't delve too deeply to know whether they do or not. So, USE AT YOUR OWN RISK. Read this too: http://www.cups.org/str.php?L3183 When running the patched version, you still need to have the proper Listen and ServerAlias entries, of course. ** Bug watch added: Debian Bug tracker #525910 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=525910 ** Bug watch added: Debian Bug tracker #530027 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=530027 ** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2009-0164 ** Patch added: "cups-patch-for-bad-request.diff" https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1086303/+attachment/4524379/+files/cups-patch-for-bad-request.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1086303 Title: Cups server can't listen - accept connections to 127.0.1.1 ( Bad request ) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1086303/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
