From: Fabrice Fontaine Date: Sat, 17 Jul 2021 09:33:13 +0000 (+0200) Subject: package/avahi: fix CVE-2021-36217 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dd7b9fa02bbac679540f50f69d175bac6af65904;p=buildroot.git package/avahi: fix CVE-2021-36217 Avahi 0.8 allows a local denial of service (NULL pointer dereference and daemon crash) against avahi-daemon via the D-Bus interface or a "ping .local" command. Signed-off-by: Fabrice Fontaine Signed-off-by: Yann E. MORIN --- diff --git a/package/avahi/0001-Fix-NULL-pointer-crashes-from-175.patch b/package/avahi/0001-Fix-NULL-pointer-crashes-from-175.patch new file mode 100644 index 0000000000..7e191e8da7 --- /dev/null +++ b/package/avahi/0001-Fix-NULL-pointer-crashes-from-175.patch @@ -0,0 +1,152 @@ +From 9d31939e55280a733d930b15ac9e4dda4497680c Mon Sep 17 00:00:00 2001 +From: Tommi Rantala +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 + +[Retrieved from: +https://github.com/lathiat/avahi/commit/9d31939e55280a733d930b15ac9e4dda4497680c] +Signed-off-by: Fabrice Fontaine +--- + 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/package/avahi/avahi.mk b/package/avahi/avahi.mk index b71fc189a0..9976df5357 100644 --- a/package/avahi/avahi.mk +++ b/package/avahi/avahi.mk @@ -15,6 +15,9 @@ AVAHI_INSTALL_STAGING = YES # part of the Debian packaging and not part of upstream avahi AVAHI_IGNORE_CVES += CVE-2021-26720 +# 0001-Fix-NULL-pointer-crashes-from-175.patch +AVAHI_IGNORE_CVES += CVE-2021-36217 + AVAHI_CONF_ENV = \ avahi_cv_sys_cxx_works=yes \ DATADIRNAME=share