Work

4 files changed, 257 insertions, 0 deletions

diff --git a/skip/avahi/CVE-2021-3468.patch b/skip/avahi/CVE-2021-3468.patch
new file mode 100644
index 0000000..3e0725a
--- /dev/null
+++ b/skip/avahi/CVE-2021-3468.patch
@@ -0,0 +1,37 @@
+From 447affe29991ee99c6b9732fc5f2c1048a611d3b Mon Sep 17 00:00:00 2001
+From: Riccardo Schirone <sirmy15@gmail.com>
+Date: Fri, 26 Mar 2021 11:50:24 +0100
+Subject: [PATCH] Avoid infinite-loop in avahi-daemon by handling HUP event in
+ client_work
+
+If a client fills the input buffer, client_work() disables the
+AVAHI_WATCH_IN event, thus preventing the function from executing the
+`read` syscall the next times it is called. However, if the client then
+terminates the connection, the socket file descriptor receives a HUP
+event, which is not handled, thus the kernel keeps marking the HUP event
+as occurring. While iterating over the file descriptors that triggered
+an event, the client file descriptor will keep having the HUP event and
+the client_work() function is always called with AVAHI_WATCH_HUP but
+without nothing being done, thus entering an infinite loop.
+
+See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984938
+---
+ avahi-daemon/simple-protocol.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/avahi-daemon/simple-protocol.c b/avahi-daemon/simple-protocol.c
+index 3e0ebb11..6c0274d6 100644
+--- a/avahi-daemon/simple-protocol.c
++++ b/avahi-daemon/simple-protocol.c
+@@ -424,6 +424,11 @@ static void client_work(AvahiWatch *watch, AVAHI_GCC_UNUSED int fd, AvahiWatchEv
+         }
+     }
+ 
++    if (events & AVAHI_WATCH_HUP) {
++        client_free(c);
++        return;
++    }
++
+     c->server->poll_api->watch_update(
+         watch,
+         (c->outbuf_length > 0 ? AVAHI_WATCH_OUT : 0) |
diff --git a/skip/avahi/CVE-2021-36217.patch b/skip/avahi/CVE-2021-36217.patch
new file mode 100644
index 0000000..7b0449a
--- /dev/null
+++ b/skip/avahi/CVE-2021-36217.patch
@@ -0,0 +1,148 @@
+From 9d31939e55280a733d930b15ac9e4dda4497680c Mon Sep 17 00:00:00 2001
+From: Tommi Rantala <tommi.t.rantala@nokia.com>
+Date: Mon, 8 Feb 2021 11:04:43 +0200
+Subject: [PATCH] Fix NULL pointer crashes from #175
+
+avahi-daemon is crashing when running "ping .local".
+The crash is due to failing assertion from NULL pointer.
+Add missing NULL pointer checks to fix it.
+
+Introduced in #175 - merge commit 8f75a045709a780c8cf92a6a21e9d35b593bdecd
+---
+ avahi-core/browse-dns-server.c   | 5 ++++-
+ avahi-core/browse-domain.c       | 5 ++++-
+ avahi-core/browse-service-type.c | 3 +++
+ avahi-core/browse-service.c      | 3 +++
+ avahi-core/browse.c              | 3 +++
+ avahi-core/resolve-address.c     | 5 ++++-
+ avahi-core/resolve-host-name.c   | 5 ++++-
+ avahi-core/resolve-service.c     | 5 ++++-
+ 8 files changed, 29 insertions(+), 5 deletions(-)
+
+diff --git a/avahi-core/browse-dns-server.c b/avahi-core/browse-dns-server.c
+index 049752e9..c2d914fa 100644
+--- a/avahi-core/browse-dns-server.c
++++ b/avahi-core/browse-dns-server.c
+@@ -343,7 +343,10 @@ AvahiSDNSServerBrowser *avahi_s_dns_server_browser_new(
+         AvahiSDNSServerBrowser* b;
+ 
+         b = avahi_s_dns_server_browser_prepare(server, interface, protocol, domain, type, aprotocol, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_dns_server_browser_start(b);
+ 
+         return b;
+-}
+\ No newline at end of file
++}
+diff --git a/avahi-core/browse-domain.c b/avahi-core/browse-domain.c
+index f145d56a..06fa70c0 100644
+--- a/avahi-core/browse-domain.c
++++ b/avahi-core/browse-domain.c
+@@ -253,7 +253,10 @@ AvahiSDomainBrowser *avahi_s_domain_browser_new(
+         AvahiSDomainBrowser *b;
+ 
+         b = avahi_s_domain_browser_prepare(server, interface, protocol, domain, type, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_domain_browser_start(b);
+ 
+         return b;
+-}
+\ No newline at end of file
++}
+diff --git a/avahi-core/browse-service-type.c b/avahi-core/browse-service-type.c
+index fdd22dcd..b1fc7af8 100644
+--- a/avahi-core/browse-service-type.c
++++ b/avahi-core/browse-service-type.c
+@@ -171,6 +171,9 @@ AvahiSServiceTypeBrowser *avahi_s_service_type_browser_new(
+         AvahiSServiceTypeBrowser *b;
+ 
+         b = avahi_s_service_type_browser_prepare(server, interface, protocol, domain, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_service_type_browser_start(b);
+ 
+         return b;
+diff --git a/avahi-core/browse-service.c b/avahi-core/browse-service.c
+index 5531360c..63e0275a 100644
+--- a/avahi-core/browse-service.c
++++ b/avahi-core/browse-service.c
+@@ -184,6 +184,9 @@ AvahiSServiceBrowser *avahi_s_service_browser_new(
+         AvahiSServiceBrowser *b;
+ 
+         b = avahi_s_service_browser_prepare(server, interface, protocol, service_type, domain, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_service_browser_start(b);
+ 
+         return b;
+diff --git a/avahi-core/browse.c b/avahi-core/browse.c
+index 2941e579..e8a915e9 100644
+--- a/avahi-core/browse.c
++++ b/avahi-core/browse.c
+@@ -634,6 +634,9 @@ AvahiSRecordBrowser *avahi_s_record_browser_new(
+         AvahiSRecordBrowser *b;
+ 
+         b = avahi_s_record_browser_prepare(server, interface, protocol, key, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_record_browser_start_query(b);
+ 
+         return b;
+diff --git a/avahi-core/resolve-address.c b/avahi-core/resolve-address.c
+index ac0b29b1..e61dd242 100644
+--- a/avahi-core/resolve-address.c
++++ b/avahi-core/resolve-address.c
+@@ -286,7 +286,10 @@ AvahiSAddressResolver *avahi_s_address_resolver_new(
+         AvahiSAddressResolver *b;
+ 
+         b = avahi_s_address_resolver_prepare(server, interface, protocol, address, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_address_resolver_start(b);
+ 
+         return b;
+-}
+\ No newline at end of file
++}
+diff --git a/avahi-core/resolve-host-name.c b/avahi-core/resolve-host-name.c
+index 808b0e72..4e8e5973 100644
+--- a/avahi-core/resolve-host-name.c
++++ b/avahi-core/resolve-host-name.c
+@@ -318,7 +318,10 @@ AvahiSHostNameResolver *avahi_s_host_name_resolver_new(
+         AvahiSHostNameResolver *b;
+ 
+         b = avahi_s_host_name_resolver_prepare(server, interface, protocol, host_name, aprotocol, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_host_name_resolver_start(b);
+ 
+         return b;
+-}
+\ No newline at end of file
++}
+diff --git a/avahi-core/resolve-service.c b/avahi-core/resolve-service.c
+index 66bf3cae..43771763 100644
+--- a/avahi-core/resolve-service.c
++++ b/avahi-core/resolve-service.c
+@@ -519,7 +519,10 @@ AvahiSServiceResolver *avahi_s_service_resolver_new(
+         AvahiSServiceResolver *b;
+ 
+         b = avahi_s_service_resolver_prepare(server, interface, protocol, name, type, domain, aprotocol, flags, callback, userdata);
++        if (!b)
++            return NULL;
++
+         avahi_s_service_resolver_start(b);
+ 
+         return b;
+-}
+\ No newline at end of file
++}
diff --git a/skip/avahi/avahi.pre-install b/skip/avahi/avahi.pre-install
new file mode 100644
index 0000000..89b2fd4
--- /dev/null
+++ b/skip/avahi/avahi.pre-install
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+addgroup -S -g 28 netdev 2>/dev/null
+addgroup -S -g 86 avahi 2>/dev/null
+adduser -S -u 86 -D -H \
+	-h /var/run/avahi-daemon \
+	-s /sbin/nologin \
+	-G avahi \
+	-g "Avahi System User" \
+	avahi 2>/dev/null
+
+exit 0
diff --git a/skip/avahi/avahi.xibuild b/skip/avahi/avahi.xibuild
new file mode 100644
index 0000000..d1e53f4
--- /dev/null
+++ b/skip/avahi/avahi.xibuild
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+NAME="avahi"
+DESC="multicast/unicast DNS-SD framework"
+
+MAKEDEPS="gdbm intltool gobject-introspection expat libdaemon glib dbus libcap gettext autoconf automake libtool libevent"
+
+PKG_VER=0.8
+SOURCE="https://github.com/lathiat/avahi/releases/download/v$PKG_VER/avahi-$PKG_VER.tar.gz"
+
+ADDITIONAL="
+CVE-2021-3468.patch
+CVE-2021-36217.patch
+avahi.pre-install
+"
+
+prepare() {
+	apply_patches
+	autoreconf -vif
+}
+
+build() {
+	# we dont build autoipd since dhcpcd does same job
+	LDFLAGS="$LDFLAGS -lintl" \
+	./configure \
+		--prefix=/usr \
+		--sysconfdir=/etc \
+		--localstatedir=/var \
+		--disable-autoipd \
+		--disable-qt3 \
+		--disable-qt4 \
+		--disable-qt5 \
+		--disable-gtk \
+		--disable-gtk3 \
+		--disable-mono \
+		--disable-monodoc \
+		--disable-doxygen-doc \
+		--disable-xmltoman \
+		--enable-compat-libdns_sd \
+		--enable-compat-howl \
+		--disable-python \
+		--with-dbus-sys=/usr/share/dbus-1/system.d \
+		--with-distro="gentoo"
+	make
+}
+
+check() {
+	make check
+}
+
+package() {
+	make DESTDIR="$PKG_DEST" install
+
+	install -d -o avahi -g avahi "$PKG_DEST"/var/run/avahi-daemon
+
+	ln -s avahi-compat-howl.pc "$PKG_DEST"/usr/lib/pkgconfig/howl.pc
+	ln -s avahi-compat-libdns_sd.pc "$PKG_DEST"/usr/lib/pkgconfig/libdns_sd.pc
+	ln -s avahi-compat-libdns_sd/dns_sd.h "$PKG_DEST"/usr/include/
+}
+