https://bugs.documentfoundation.org/show_bug.cgi?id=97931
Bug ID: 97931
Summary: LibreOffice looks up local hostname in DNS, leading to
performance problems and security issues.
Product: LibreOffice
Version: 5.0.4.2 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
User action: open LibreOffice with and without a network connection, and with
connections to various networks, with various different DNS servers and varying
proxy setups.
Result: LibreOffice takes between less than 1 and 45 seconds to start up,
depending which network the computer is connected to. The quickest startup
comes with no network connection.
Expected result: LibreOffice should start up quickly regardless of the network
context.
Workaround: add the local hostname to the system hosts file with address
127.0.0.1
Conclusion: LibreOffice is trying to find the host address by looking up the
hostname in the DNS.
This is a Bad Idea. It wastes time and it's completely unnecessary. Under some
circumstances revealing the hostname to the Internet like this could have
security implications.
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