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* gnu/packages/patches/bind-CVE-2018-5738.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/dns.scm (isc-bind)[source]: Use it.
100 lines
3.6 KiB
Diff
100 lines
3.6 KiB
Diff
Fix CVE-2018-5738:
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https://kb.isc.org/article/AA-01616/0/CVE-2018-5738
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5738
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diff --git a/bin/named/server.c b/bin/named/server.c
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index f63554e..847c4ff 100644
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--- a/bin/named/server.c
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+++ b/bin/named/server.c
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@@ -3725,10 +3725,6 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist,
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CHECKM(named_config_getport(config, &port), "port");
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dns_view_setdstport(view, port);
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- CHECK(configure_view_acl(vconfig, config, named_g_config,
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- "allow-query", NULL, actx,
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- named_g_mctx, &view->queryacl));
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-
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/*
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* Make the list of response policy zone names for a view that
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* is used for real lookups and so cares about hints.
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@@ -4692,21 +4688,35 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist,
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"allow-query-cache-on", NULL, actx,
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named_g_mctx, &view->cacheonacl));
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/*
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- * Set "allow-query-cache", "allow-recursion", and
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- * "allow-recursion-on" acls if configured in named.conf.
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- * (Ignore the global defaults for now, because these ACLs
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- * can inherit from each other when only some of them set at
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- * the options/view level.)
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+ * Set the "allow-query", "allow-query-cache", "allow-recursion",
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+ * and "allow-recursion-on" ACLs if configured in named.conf, but
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+ * NOT from the global defaults. This is done by leaving the third
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+ * argument to configure_view_acl() NULL.
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+ *
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+ * We ignore the global defaults here because these ACLs
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+ * can inherit from each other. If any are still unset after
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+ * applying the inheritance rules, we'll look up the defaults at
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+ * that time.
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*/
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- CHECK(configure_view_acl(vconfig, config, NULL, "allow-query-cache",
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- NULL, actx, named_g_mctx, &view->cacheacl));
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+
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+ /* named.conf only */
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+ CHECK(configure_view_acl(vconfig, config, NULL,
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+ "allow-query", NULL, actx,
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+ named_g_mctx, &view->queryacl));
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+
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+ /* named.conf only */
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+ CHECK(configure_view_acl(vconfig, config, NULL,
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+ "allow-query-cache", NULL, actx,
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+ named_g_mctx, &view->cacheacl));
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if (strcmp(view->name, "_bind") != 0 &&
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view->rdclass != dns_rdataclass_chaos)
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{
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+ /* named.conf only */
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CHECK(configure_view_acl(vconfig, config, NULL,
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"allow-recursion", NULL, actx,
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named_g_mctx, &view->recursionacl));
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+ /* named.conf only */
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CHECK(configure_view_acl(vconfig, config, NULL,
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"allow-recursion-on", NULL, actx,
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named_g_mctx, &view->recursiononacl));
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@@ -4744,18 +4754,21 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist,
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* the global config.
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*/
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if (view->recursionacl == NULL) {
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+ /* global default only */
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CHECK(configure_view_acl(NULL, NULL, named_g_config,
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"allow-recursion", NULL,
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actx, named_g_mctx,
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&view->recursionacl));
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}
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if (view->recursiononacl == NULL) {
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+ /* global default only */
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CHECK(configure_view_acl(NULL, NULL, named_g_config,
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"allow-recursion-on", NULL,
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actx, named_g_mctx,
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&view->recursiononacl));
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}
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if (view->cacheacl == NULL) {
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+ /* global default only */
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CHECK(configure_view_acl(NULL, NULL, named_g_config,
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"allow-query-cache", NULL,
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actx, named_g_mctx,
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@@ -4769,6 +4782,14 @@ configure_view(dns_view_t *view, dns_viewlist_t *viewlist,
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CHECK(dns_acl_none(mctx, &view->cacheacl));
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}
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+ if (view->queryacl == NULL) {
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+ /* global default only */
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+ CHECK(configure_view_acl(NULL, NULL, named_g_config,
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+ "allow-query", NULL,
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+ actx, named_g_mctx,
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+ &view->queryacl));
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+ }
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+
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/*
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* Ignore case when compressing responses to the specified
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* clients. This causes case not always to be preserved,
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