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From: Mark Andrews <marka@isc.org>
Date: Wed, 29 Jul 2020 23:36:03 +1000
Subject: [1/3] Update-policy 'subdomain' was incorrectly treated as 'zonesub'
Origin: https://gitlab.isc.org/isc-projects/bind9/commit/e4cccf9668c7adee4724a7649ec64685f82c8677
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2020-8624
resulting in names outside the specified subdomain having the wrong
restrictions for the given key.
---
bin/named/zoneconf.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/bin/named/zoneconf.c b/bin/named/zoneconf.c
index e237bdb..4898447 100644
--- a/bin/named/zoneconf.c
+++ b/bin/named/zoneconf.c
@@ -237,7 +237,8 @@ configure_zone_ssutable(const cfg_obj_t *zconfig, dns_zone_t *zone,
str = cfg_obj_asstring(matchtype);
CHECK(dns_ssu_mtypefromstring(str, &mtype));
- if (mtype == dns_ssumatchtype_subdomain) {
+ if (mtype == dns_ssumatchtype_subdomain &&
+ strcasecmp(str, "zonesub") == 0) {
usezone = true;
}
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