[cups.bugs] [MOD] STR #4221: CUPS doesn't treat ::1 address as localhost
korobkin+cups at gmail.com
Fri Nov 2 14:09:46 PDT 2012
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OS: Ubuntu 10.04 x64
A busy printserver easily gets DoS-ed by itself when IPv6 is enabled.
Somehow it cannot recognize its own localhost address as local address,
despite the code being in place for that.
This is what I see in the logs, when random CGI pages become unavailable
in CUPS web interface. Notice how the client is represented as "v1.::1",
not sure why:
W [02/Nov/2012:20:30:37 +0000] Possible DoS attack - more than 10 clients
connecting from [v1.::1]!
This is my /etc/hosts file:
$ cat /etc/hosts
::1 ip6-localhost ip6-loopback
This is my Port directives from cupsd.conf (I don't use domain socket and
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