From: Meenali Gupta <[email protected]> A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.
Signed-off-by: Meenali Gupta <[email protected]> Signed-off-by: Steve Sakoman <[email protected]> --- meta/recipes-connectivity/avahi/avahi_0.8.bb | 1 + .../avahi/files/CVE-2023-38470.patch | 59 +++++++++++++++++++ 2 files changed, 60 insertions(+) create mode 100644 meta/recipes-connectivity/avahi/files/CVE-2023-38470.patch diff --git a/meta/recipes-connectivity/avahi/avahi_0.8.bb b/meta/recipes-connectivity/avahi/avahi_0.8.bb index ac04b42614..a2ad9058d6 100644 --- a/meta/recipes-connectivity/avahi/avahi_0.8.bb +++ b/meta/recipes-connectivity/avahi/avahi_0.8.bb @@ -27,6 +27,7 @@ SRC_URI = "https://github.com/lathiat/avahi/releases/download/v${PV}/avahi-${PV} file://handle-hup.patch \ file://local-ping.patch \ file://CVE-2023-38471.patch \ + file://CVE-2023-38470.patch \ " UPSTREAM_CHECK_URI = "https://github.com/lathiat/avahi/releases/"; diff --git a/meta/recipes-connectivity/avahi/files/CVE-2023-38470.patch b/meta/recipes-connectivity/avahi/files/CVE-2023-38470.patch new file mode 100644 index 0000000000..5cf9af6fd6 --- /dev/null +++ b/meta/recipes-connectivity/avahi/files/CVE-2023-38470.patch @@ -0,0 +1,59 @@ +From 26806dbde54c5b40a2bf108d334ba59ec9d242d6 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <[email protected]> +Date: Tue, 11 Apr 2023 15:29:59 +0200 +Subject: [PATCH]Ensure each label is at least one byte long + +The only allowed exception is single dot, where it should return empty +string. + +Fixes #454. + +Upstream-Status: Backport [https://github.com/lathiat/avahi/commit/94cb6489114636940ac683515417990b55b5d66c] +CVE: CVE-2023-38470 + +Signed-off-by: Meenali Gupta <[email protected]> +--- + avahi-common/domain-test.c | 14 ++++++++++++++ + avahi-common/domain.c | 2 +- + 2 files changed, 15 insertions(+), 1 deletion(-) + +diff --git a/avahi-common/domain-test.c b/avahi-common/domain-test.c +index cf763ec..3acc1c1 100644 +--- a/avahi-common/domain-test.c ++++ b/avahi-common/domain-test.c +@@ -45,6 +45,20 @@ int main(AVAHI_GCC_UNUSED int argc, AVAHI_GCC_UNUSED char *argv[]) { + printf("%s\n", s = avahi_normalize_name_strdup("fo\\\\o\\..f oo.")); + avahi_free(s); + ++ printf("%s\n", s = avahi_normalize_name_strdup(".")); ++ avahi_free(s); ++ ++ s = avahi_normalize_name_strdup(",.=.}.=.?-.}.=.?.?.}.}.?.?.?.z.?.?.}.}." ++ "}.?.?.?.r.=.=.}.=.?.}}.}.?.?.?.zM.=.=.?.?.}.}.?.?.}.}.}" ++ ".?.?.?.r.=.=.}.=.?.}}.}.?.?.?.zM.=.=.?.?.}.}.?.?.?.zM.?`" ++ "?.}.}.}.?.?.?.r.=.?.}.=.?.?.}.?.?.?.}.=.?.?.}??.}.}.?.?." ++ "?.z.?.?.}.}.}.?.?.?.r.=.=.}.=.?.}}.}.?.?.?.zM.?`?.}.}.}." ++ "??.?.zM.?`?.}.}.}.?.?.?.r.=.?.}.=.?.?.}.?.?.?.}.=.?.?.}?" ++ "?.}.}.?.?.?.z.?.?.}.}.}.?.?.?.r.=.=.}.=.?.}}.}.?.?.?.zM." ++ "?`?.}.}.}.?.?.?.r.=.=.?.?`.?.?}.}.}.?.?.?.r.=.?.}.=.?.?." ++ "}.?.?.?.}.=.?.?.}"); ++ assert(s == NULL); ++ + printf("%i\n", avahi_domain_equal("\\065aa bbb\\.\\046cc.cc\\\\.dee.fff.", "Aaa BBB\\.\\.cc.cc\\\\.dee.fff")); + printf("%i\n", avahi_domain_equal("A", "a")); + +diff --git a/avahi-common/domain.c b/avahi-common/domain.c +index 3b1ab68..e66d241 100644 +--- a/avahi-common/domain.c ++++ b/avahi-common/domain.c +@@ -201,7 +201,7 @@ char *avahi_normalize_name(const char *s, char *ret_s, size_t size) { + } + + if (!empty) { +- if (size < 1) ++ if (size < 2) + return NULL; + + *(r++) = '.'; +-- +2.40.0 -- 2.34.1
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#191004): https://lists.openembedded.org/g/openembedded-core/message/191004 Mute This Topic: https://lists.openembedded.org/mt/102742400/21656 Group Owner: [email protected] Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
