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GNUmakefile @ 12181:783056b4e448 0.11 0.11.12
util.xml: Do not allow doctypes, comments or processing instructions
Yes. This is as bad as it sounds. CVE pending.
In Prosody itself, this only affects mod_websocket, which uses util.xml
to parse the <open/> frame, thus allowing unauthenticated remote DoS
using Billion Laughs. However, third-party modules using util.xml may
also be affected by this.
This commit installs handlers which disallow the use of doctype
declarations and processing instructions without any escape hatch. It,
by default, also introduces such a handler for comments, however, there
is a way to enable comments nontheless.
This is because util.xml is used to parse human-facing data, where
comments are generally a desirable feature, and also because comments
are generally harmless.
author | Jonas Schäfer <jonas@wielicki.name> |
---|---|
date | Mon, 10 Jan 2022 18:23:54 +0100 |
parent | 9429:5f51710d7c1e |
child | 9779:0b04099b49de |
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include config.unix BIN = $(DESTDIR)$(PREFIX)/bin CONFIG = $(DESTDIR)$(SYSCONFDIR) MODULES = $(DESTDIR)$(LIBDIR)/prosody/modules SOURCE = $(DESTDIR)$(LIBDIR)/prosody DATA = $(DESTDIR)$(DATADIR) MAN = $(DESTDIR)$(PREFIX)/share/man INSTALLEDSOURCE = $(LIBDIR)/prosody INSTALLEDCONFIG = $(SYSCONFDIR) INSTALLEDMODULES = $(LIBDIR)/prosody/modules INSTALLEDDATA = $(DATADIR) INSTALL=install -p INSTALL_DATA=$(INSTALL) -m644 INSTALL_EXEC=$(INSTALL) -m755 MKDIR=install -d MKDIR_PRIVATE=$(MKDIR) -m750 LUACHECK=luacheck BUSTED=busted .PHONY: all test coverage clean install all: prosody.install prosodyctl.install prosody.cfg.lua.install prosody.version $(MAKE) -C util-src install ifeq ($(EXCERTS),yes) -$(MAKE) -C certs localhost.crt example.com.crt endif install: prosody.install prosodyctl.install prosody.cfg.lua.install util/encodings.so util/encodings.so util/pposix.so util/signal.so $(MKDIR) $(BIN) $(CONFIG) $(MODULES) $(SOURCE) $(MKDIR_PRIVATE) $(DATA) $(MKDIR) $(MAN)/man1 $(MKDIR) $(CONFIG)/certs $(MKDIR) $(SOURCE)/core $(SOURCE)/net $(SOURCE)/util $(INSTALL_EXEC) ./prosody.install $(BIN)/prosody $(INSTALL_EXEC) ./prosodyctl.install $(BIN)/prosodyctl $(INSTALL_DATA) core/*.lua $(SOURCE)/core $(INSTALL_DATA) net/*.lua $(SOURCE)/net $(MKDIR) $(SOURCE)/net/http $(SOURCE)/net/resolvers $(SOURCE)/net/websocket $(INSTALL_DATA) net/http/*.lua $(SOURCE)/net/http $(INSTALL_DATA) net/resolvers/*.lua $(SOURCE)/net/resolvers $(INSTALL_DATA) net/websocket/*.lua $(SOURCE)/net/websocket $(INSTALL_DATA) util/*.lua $(SOURCE)/util $(INSTALL_DATA) util/*.so $(SOURCE)/util $(MKDIR) $(SOURCE)/util/sasl $(INSTALL_DATA) util/sasl/*.lua $(SOURCE)/util/sasl $(MKDIR) $(MODULES)/mod_s2s $(MODULES)/mod_pubsub $(MODULES)/adhoc $(MODULES)/muc $(MODULES)/mod_mam $(INSTALL_DATA) plugins/*.lua $(MODULES) $(INSTALL_DATA) plugins/mod_s2s/*.lua $(MODULES)/mod_s2s $(INSTALL_DATA) plugins/mod_pubsub/*.lua $(MODULES)/mod_pubsub $(INSTALL_DATA) plugins/adhoc/*.lua $(MODULES)/adhoc $(INSTALL_DATA) plugins/muc/*.lua $(MODULES)/muc $(INSTALL_DATA) plugins/mod_mam/*.lua $(MODULES)/mod_mam $(INSTALL_DATA) certs/* $(CONFIG)/certs $(INSTALL_DATA) man/prosodyctl.man $(MAN)/man1/prosodyctl.1 test -f $(CONFIG)/prosody.cfg.lua || $(INSTALL_DATA) prosody.cfg.lua.install $(CONFIG)/prosody.cfg.lua -test -f prosody.version && $(INSTALL_DATA) prosody.version $(SOURCE)/prosody.version $(MAKE) install -C util-src clean: rm -f prosody.install rm -f prosodyctl.install rm -f prosody.cfg.lua.install rm -f prosody.version $(MAKE) clean -C util-src test: $(BUSTED) --lua=$(RUNWITH) coverage: -rm -- luacov.* $(BUSTED) --lua=$(RUNWITH) -c luacov luacov-console luacov-console -s @echo "To inspect individual files run: luacov-console -l FILENAME" lint: $(LUACHECK) -q $$(HGPLAIN= hg files -I '**.lua') prosody prosodyctl @echo $$(sed -n '/^\tlocal exclude_files/,/^}/p;' .luacheckrc | sed '1d;$d' | wc -l) files ignored shellcheck configure util/%.so: $(MAKE) install -C util-src %.install: % sed "1s| lua$$| $(RUNWITH)|; \ s|^CFG_SOURCEDIR=.*;$$|CFG_SOURCEDIR='$(INSTALLEDSOURCE)';|; \ s|^CFG_CONFIGDIR=.*;$$|CFG_CONFIGDIR='$(INSTALLEDCONFIG)';|; \ s|^CFG_DATADIR=.*;$$|CFG_DATADIR='$(INSTALLEDDATA)';|; \ s|^CFG_PLUGINDIR=.*;$$|CFG_PLUGINDIR='$(INSTALLEDMODULES)/';|;" < $^ > $@ prosody.cfg.lua.install: prosody.cfg.lua.dist sed 's|certs/|$(INSTALLEDCONFIG)/certs/|' $^ > $@ %.version: %.release cp $^ $@ %.version: .hg_archival.txt sed -n 's/^node: \(............\).*/\1/p' $^ > $@ %.version: .hg/dirstate hexdump -n6 -e'6/1 "%02x"' $^ > $@ %.version: echo unknown > $@