Accepting request 887071 from GNOME:Next
- Add avahi-CVE-2021-3468.patch: avoid infinite loop by handling HUP event in client_work (boo#1184521 CVE-2021-3468). https://github.com/lathiat/avahi/pull/330 OBS-URL: https://build.opensuse.org/request/show/887071 OBS-URL: https://build.opensuse.org/package/show/GNOME:Factory/avahi?expand=0&rev=184
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avahi-CVE-2021-3468.patch
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40
avahi-CVE-2021-3468.patch
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@ -0,0 +1,40 @@
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From 447affe29991ee99c6b9732fc5f2c1048a611d3b Mon Sep 17 00:00:00 2001
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From: Riccardo Schirone <sirmy15@gmail.com>
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Date: Fri, 26 Mar 2021 11:50:24 +0100
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Subject: [PATCH] Avoid infinite-loop in avahi-daemon by handling HUP event in
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client_work
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If a client fills the input buffer, client_work() disables the
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AVAHI_WATCH_IN event, thus preventing the function from executing the
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`read` syscall the next times it is called. However, if the client then
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terminates the connection, the socket file descriptor receives a HUP
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event, which is not handled, thus the kernel keeps marking the HUP event
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as occurring. While iterating over the file descriptors that triggered
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an event, the client file descriptor will keep having the HUP event and
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the client_work() function is always called with AVAHI_WATCH_HUP but
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without nothing being done, thus entering an infinite loop.
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See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984938
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---
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avahi-daemon/simple-protocol.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/avahi-daemon/simple-protocol.c b/avahi-daemon/simple-protocol.c
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index 3e0ebb1..6c0274d 100644
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--- a/avahi-daemon/simple-protocol.c
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+++ b/avahi-daemon/simple-protocol.c
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@@ -424,6 +424,11 @@ static void client_work(AvahiWatch *watch, AVAHI_GCC_UNUSED int fd, AvahiWatchEv
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}
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}
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+ if (events & AVAHI_WATCH_HUP) {
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+ client_free(c);
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+ return;
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+ }
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+
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c->server->poll_api->watch_update(
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watch,
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(c->outbuf_length > 0 ? AVAHI_WATCH_OUT : 0) |
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--
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2.31.1
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@ -77,6 +77,8 @@ Patch4: avahi-daemon-check-dns-suse.patch
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Patch19: avahi-0.6.32-suppress-resolv-conf-warning.patch
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# PATCH-FIX-UPSTREAM add-IT_PROG_INTLTOOL.patch alarrosa@suse.com -- add IT_PROG_INTLTOOL so intltool works
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Patch20: add-IT_PROG_INTLTOOL.patch
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# PATCH-FIX-UPSTREAM avahi-CVE-2021-3468.patch boo#1184521 mgorse@suse.com -- avoid infinite loop by handling HUP event in client_work.
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Patch21: avahi-CVE-2021-3468.patch
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BuildRequires: fdupes
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BuildRequires: gcc-c++
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BuildRequires: gdbm-devel
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@ -261,6 +263,7 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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%else
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%package -n python3-avahi
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Summary: A set of Avahi utilities written in Python
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Group: Development/Languages/Python
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@ -404,13 +407,14 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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# This is the avahi-discover command, only provided for the primary python3 flavor
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%package -n python3-avahi-gtk
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Summary: A set of Avahi utilities written in Python Using python-gtk
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Group: Development/Languages/Python
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Requires: python3-avahi = %{version}
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Requires: python3-gobject
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Requires(post): coreutils
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Requires(postun): coreutils
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Requires(postun):coreutils
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Provides: %{oldpython}-avahi-gtk = %{version}
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Obsoletes: %{oldpython}-avahi-gtk < %{version}
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# Provide split-provides for update from <= 11.0:
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@ -514,6 +518,7 @@ translation-update-upstream
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%patch4
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%patch19 -p1
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%patch20 -p1
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%patch21 -p1
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%if !%{build_core}
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# Replace all .la references from local .la files to installed versions
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@ -798,6 +803,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%postun -n python-avahi
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%python_uninstall_alternative avahi-bookmarks
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%else
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%post -n python3-avahi
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%python_install_alternative avahi-bookmarks avahi-bookmarks.1
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@ -974,6 +980,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%if %{build_core}
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%files -n avahi-mono
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%else
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%files
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%endif
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%defattr(-,root,root)
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@ -77,6 +77,8 @@ Patch4: avahi-daemon-check-dns-suse.patch
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Patch19: avahi-0.6.32-suppress-resolv-conf-warning.patch
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# PATCH-FIX-UPSTREAM add-IT_PROG_INTLTOOL.patch alarrosa@suse.com -- add IT_PROG_INTLTOOL so intltool works
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Patch20: add-IT_PROG_INTLTOOL.patch
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# PATCH-FIX-UPSTREAM avahi-CVE-2021-3468.patch boo#1184521 mgorse@suse.com -- avoid infinite loop by handling HUP event in client_work.
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Patch21: avahi-CVE-2021-3468.patch
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BuildRequires: fdupes
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BuildRequires: gcc-c++
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BuildRequires: gdbm-devel
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@ -260,6 +262,7 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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%else
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%package -n python3-avahi
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Summary: A set of Avahi utilities written in Python
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Group: Development/Languages/Python
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@ -403,13 +406,14 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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# This is the avahi-discover command, only provided for the primary python3 flavor
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%package -n python3-avahi-gtk
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Summary: A set of Avahi utilities written in Python Using python-gtk
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Group: Development/Languages/Python
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Requires: python3-avahi = %{version}
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Requires: python3-gobject
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Requires(post): coreutils
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Requires(postun): coreutils
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Requires(postun):coreutils
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Provides: %{oldpython}-avahi-gtk = %{version}
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Obsoletes: %{oldpython}-avahi-gtk < %{version}
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# Provide split-provides for update from <= 11.0:
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@ -451,7 +455,6 @@ DNS specifications for Zeroconf Computing.
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%if %{build_mono}
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%package -n avahi-mono
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Summary: Mono Bindings for avahi, the D-BUS Service for Zeroconf and Bonjour
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License: LGPL-2.1-or-later
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Group: Development/Languages/Mono
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Requires: gtk-sharp2
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Requires: libavahi-client%{avahi_client_sover} >= %{version}
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@ -514,6 +517,7 @@ translation-update-upstream
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%patch4
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%patch19 -p1
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%patch20 -p1
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%patch21 -p1
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%if !%{build_core}
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# Replace all .la references from local .la files to installed versions
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@ -798,6 +802,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%postun -n python-avahi
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%python_uninstall_alternative avahi-bookmarks
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%else
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%post -n python3-avahi
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%python_install_alternative avahi-bookmarks avahi-bookmarks.1
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@ -974,6 +979,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%if %{build_core}
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%files -n avahi-mono
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%else
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%files
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%endif
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%defattr(-,root,root)
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@ -77,6 +77,8 @@ Patch4: avahi-daemon-check-dns-suse.patch
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Patch19: avahi-0.6.32-suppress-resolv-conf-warning.patch
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# PATCH-FIX-UPSTREAM add-IT_PROG_INTLTOOL.patch alarrosa@suse.com -- add IT_PROG_INTLTOOL so intltool works
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Patch20: add-IT_PROG_INTLTOOL.patch
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# PATCH-FIX-UPSTREAM avahi-CVE-2021-3468.patch boo#1184521 mgorse@suse.com -- avoid infinite loop by handling HUP event in client_work.
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Patch21: avahi-CVE-2021-3468.patch
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BuildRequires: fdupes
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BuildRequires: gcc-c++
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BuildRequires: gdbm-devel
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@ -261,6 +263,7 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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%else
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%package -n python3-avahi
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Summary: A set of Avahi utilities written in Python
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Group: Development/Languages/Python
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@ -404,13 +407,14 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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# This is the avahi-discover command, only provided for the primary python3 flavor
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%package -n python3-avahi-gtk
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Summary: A set of Avahi utilities written in Python Using python-gtk
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Group: Development/Languages/Python
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Requires: python3-avahi = %{version}
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Requires: python3-gobject
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Requires(post): coreutils
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Requires(postun): coreutils
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Requires(postun):coreutils
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Provides: %{oldpython}-avahi-gtk = %{version}
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Obsoletes: %{oldpython}-avahi-gtk < %{version}
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# Provide split-provides for update from <= 11.0:
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@ -514,6 +518,7 @@ translation-update-upstream
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%patch4
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%patch19 -p1
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%patch20 -p1
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%patch21 -p1
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%if !%{build_core}
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# Replace all .la references from local .la files to installed versions
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@ -798,6 +803,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%postun -n python-avahi
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%python_uninstall_alternative avahi-bookmarks
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%else
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%post -n python3-avahi
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%python_install_alternative avahi-bookmarks avahi-bookmarks.1
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@ -974,6 +980,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%if %{build_core}
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%files -n avahi-mono
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%else
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%files
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%endif
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%defattr(-,root,root)
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@ -1,3 +1,10 @@
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-------------------------------------------------------------------
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Tue Apr 20 16:17:54 UTC 2021 - Michael Gorse <mgorse@suse.com>
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- Add avahi-CVE-2021-3468.patch: avoid infinite loop by handling
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HUP event in client_work (boo#1184521 CVE-2021-3468).
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https://github.com/lathiat/avahi/pull/330
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-------------------------------------------------------------------
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Tue Feb 16 22:37:35 UTC 2021 - Michael Gorse <mgorse@suse.com>
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@ -79,6 +79,8 @@ Patch4: avahi-daemon-check-dns-suse.patch
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Patch19: avahi-0.6.32-suppress-resolv-conf-warning.patch
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# PATCH-FIX-UPSTREAM add-IT_PROG_INTLTOOL.patch alarrosa@suse.com -- add IT_PROG_INTLTOOL so intltool works
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Patch20: add-IT_PROG_INTLTOOL.patch
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# PATCH-FIX-UPSTREAM avahi-CVE-2021-3468.patch boo#1184521 mgorse@suse.com -- avoid infinite loop by handling HUP event in client_work.
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Patch21: avahi-CVE-2021-3468.patch
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BuildRequires: fdupes
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BuildRequires: gcc-c++
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BuildRequires: gdbm-devel
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@ -263,6 +265,7 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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%else
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%package -n python3-avahi
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Summary: A set of Avahi utilities written in Python
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Group: Development/Languages/Python
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@ -406,13 +409,14 @@ Avahi is an implementation of the DNS Service Discovery and Multicast
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DNS specifications for Zeroconf Computing.
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# This is the avahi-discover command, only provided for the primary python3 flavor
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%package -n python3-avahi-gtk
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Summary: A set of Avahi utilities written in Python Using python-gtk
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Group: Development/Languages/Python
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Requires: python3-avahi = %{version}
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Requires: python3-gobject
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Requires(post): coreutils
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Requires(postun): coreutils
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Requires(postun):coreutils
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Provides: %{oldpython}-avahi-gtk = %{version}
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Obsoletes: %{oldpython}-avahi-gtk < %{version}
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# Provide split-provides for update from <= 11.0:
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@ -509,6 +513,7 @@ translation-update-upstream
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%patch4
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%patch19 -p1
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%patch20 -p1
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%patch21 -p1
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%if !%{build_core}
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# Replace all .la references from local .la files to installed versions
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@ -793,6 +798,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%postun -n python-avahi
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%python_uninstall_alternative avahi-bookmarks
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%else
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%post -n python3-avahi
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%python_install_alternative avahi-bookmarks avahi-bookmarks.1
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@ -969,6 +975,7 @@ find %{_localstatedir}/lib/avahi-autoipd -user avahi -exec chown avahi-autoipd:a
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%if %{build_core}
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%files -n avahi-mono
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%else
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%files
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%endif
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%defattr(-,root,root)
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