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dnsmasq: version 2.90 

Bump to 2.90 to get upstream's fix for DNSSEC KeyTrap (CVE-2023-50387,
CVE-2023-50868) among many other goodies and fixes (notably, upstream
568fb024... fixes a UAF in cache_remove_uid that was routinely crashing
dnsmasq in my deployment).

Catch up our 200-ubus_dns.patch, too.

Signed-off-by: Nathaniel Wesley Filardo <nwfilardo@gmail.com>
This commit is contained in:
Nathaniel Wesley Filardo 2024-02-18 13:12:10 +00:00 committed by Robert Marko
parent 3561015efd
commit 838a27f64f
2 changed files with 64 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
package/network/services/dnsmasq/Makefile
View File

@ -8,13 +8,13 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=dnsmasq
PKG_UPSTREAM_VERSION:=2.89
PKG_UPSTREAM_VERSION:=2.90
PKG_VERSION:=$(subst test,~~test,$(subst rc,~rc,$(PKG_UPSTREAM_VERSION)))
PKG_RELEASE:=8
PKG_SOURCE:=$(PKG_NAME)-$(PKG_UPSTREAM_VERSION).tar.xz
PKG_SOURCE_URL:=https://thekelleys.org.uk/dnsmasq/
PKG_HASH:=02bd230346cf0b9d5909f5e151df168b2707103785eb616b56685855adebb609
PKG_HASH:=8e50309bd837bfec9649a812e066c09b6988b73d749b7d293c06c57d46a109e4
PKG_LICENSE:=GPL-2.0
PKG_LICENSE_FILES:=COPYING

118
package/network/services/dnsmasq/patches/200-ubus_dns.patch
View File

@ -1,6 +1,23 @@
diff --git a/src/dnsmasq.c b/src/dnsmasq.c
index 30fb419..776351a 100644
--- a/src/dnsmasq.c
+++ b/src/dnsmasq.c
@@ -2025,6 +2025,10 @@ static void check_dns_listeners(time_t now)
daemon->pipe_to_parent = pipefd[1];
}
+#ifdef HAVE_UBUS
+ drop_ubus_listeners();
+#endif
+
/* start with no upstream connections. */
for (s = daemon->servers; s; s = s->next)
s->tcpfd = -1;
diff --git a/src/dnsmasq.h b/src/dnsmasq.h
index e455c3f..c84ba48 100644
--- a/src/dnsmasq.h
+++ b/src/dnsmasq.h
@@ -1631,14 +1631,26 @@ void emit_dbus_signal(int action, struct
@@ -1673,14 +1673,26 @@ void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname);
/* ubus.c */
#ifdef HAVE_UBUS
@ -11,6 +28,7 @@
void set_ubus_listeners(void);
void check_ubus_listeners(void);
+void drop_ubus_listeners(void);
+int ubus_dns_notify_has_subscribers(void);
+struct blob_buf *ubus_dns_notify_prepare(void);
+int ubus_dns_notify(const char *type, ubus_dns_notify_cb cb, void *priv);
void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface);
@ -19,14 +37,28 @@
void ubus_event_bcast_connmark_allowlist_resolved(u32 mark, const char *pattern, const char *ip, u32 ttl);
# endif
+#else
+struct blob_buf;
+static inline struct blob_buf *ubus_dns_notify_prepare(void)
+static inline int ubus_dns_notify_has_subscribers(void)
+{
+ return NULL;
+ return 0;
+}
#endif
/* ipset.c */
diff --git a/src/forward.c b/src/forward.c
index 32f37e4..3d28963 100644
--- a/src/forward.c
+++ b/src/forward.c
@@ -803,7 +803,7 @@ static size_t process_reply(struct dns_header *header, time_t now, struct server
cache_secure = 0;
}
- if (daemon->doctors && do_doctor(header, n, daemon->namebuff))
+ if ((daemon->doctors || ubus_dns_notify_has_subscribers()) && do_doctor(header, n, daemon->namebuff))
cache_secure = 0;
/* check_for_bogus_wildcard() does it's own caching, so
diff --git a/src/rfc1035.c b/src/rfc1035.c
index 387d894..7bf7967 100644
--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -13,8 +13,10 @@
@ -41,7 +73,7 @@
int extract_name(struct dns_header *header, size_t plen, unsigned char **pp,
char *name, int isExtract, int extrabytes)
@@ -394,9 +396,64 @@ static int private_net6(struct in6_addr
@@ -384,10 +386,65 @@ static int private_net6(struct in6_addr *a, int ban_localhost)
((u32 *)a)[0] == htonl(0x20010db8); /* RFC 6303 4.6 */
}
@ -100,14 +132,15 @@
+}
+#endif
+
static unsigned char *do_doctor(unsigned char *p, int count, struct dns_header *header, size_t qlen, int *doctored)
int do_doctor(struct dns_header *header, size_t qlen, char *namebuff)
{
unsigned char *p;
- int i, qtype, qclass, rdlen;
+ int i, qtype, qclass, rdlen, ttl;
for (i = count; i != 0; i--)
{
@@ -405,7 +462,7 @@ static unsigned char *do_doctor(unsigned
int done = 0;
if (!(p = skip_questions(header, qlen)))
@@ -404,7 +461,7 @@ int do_doctor(struct dns_header *header, size_t qlen, char *namebuff)
GETSHORT(qtype, p);
GETSHORT(qclass, p);
@ -116,53 +149,36 @@
GETSHORT(rdlen, p);
if (qclass == C_IN && qtype == T_A)
@@ -416,6 +473,9 @@ static unsigned char *do_doctor(unsigned
@@ -415,6 +472,9 @@ int do_doctor(struct dns_header *header, size_t qlen, char *namebuff)
if (!CHECK_LEN(header, p, qlen, INADDRSZ))
return 0;
return done;
+ if (ubus_dns_doctor(daemon->namebuff, ttl, p, AF_INET))
+ *doctored = 1;
+ header->hb3 &= ~HB3_AA;
+
/* alignment */
memcpy(&addr, p, INADDRSZ);
memcpy(&addr.addr4, p, INADDRSZ);
@@ -433,13 +493,22 @@ static unsigned char *do_doctor(unsigned
addr.s_addr &= ~doctor->mask.s_addr;
addr.s_addr |= (doctor->out.s_addr & doctor->mask.s_addr);
/* Since we munged the data, the server it came from is no longer authoritative */
- header->hb3 &= ~HB3_AA;
*doctored = 1;
memcpy(p, &addr, INADDRSZ);
@@ -444,6 +504,14 @@ int do_doctor(struct dns_header *header, size_t qlen, char *namebuff)
break;
}
}
-
+ else if (qclass == C_IN && qtype == T_AAAA)
+ {
+ if (!CHECK_LEN(header, p, qlen, IN6ADDRSZ))
+ return 0;
+
+ if (ubus_dns_doctor(daemon->namebuff, ttl, p, AF_INET6))
+ *doctored = 1;
+ header->hb3 &= ~HB3_AA;
+ }
+
+ if (*doctored)
+ header->hb3 &= ~HB3_AA;
if (!ADD_RDLEN(header, p, qlen, rdlen))
return 0; /* bad packet */
}
@@ -570,7 +639,7 @@ int extract_addresses(struct dns_header
cache_start_insert();
/* find_soa is needed for dns_doctor side effects, so don't call it lazily if there are any. */
- if (daemon->doctors || option_bool(OPT_DNSSEC_VALID))
+ if (daemon->doctors || option_bool(OPT_DNSSEC_VALID) || ubus_dns_notify_prepare())
{
searched_soa = 1;
ttl = find_soa(header, qlen, doctored);
return done; /* bad packet */
diff --git a/src/ubus.c b/src/ubus.c
index a5758e7..f2a75a8 100644
--- a/src/ubus.c
+++ b/src/ubus.c
@@ -72,6 +72,13 @@ static struct ubus_object ubus_object =
@@ -72,6 +72,13 @@ static struct ubus_object ubus_object = {
.subscribe_cb = ubus_subscribe_cb,
};
@ -176,7 +192,7 @@
static void ubus_subscribe_cb(struct ubus_context *ctx, struct ubus_object *obj)
{
(void)ctx;
@@ -105,13 +112,21 @@ static void ubus_disconnect_cb(struct ub
@@ -105,13 +112,21 @@ static void ubus_disconnect_cb(struct ubus_context *ubus)
char *ubus_init()
{
struct ubus_context *ubus = NULL;
@ -216,15 +232,18 @@
static int ubus_handle_metrics(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
@@ -328,6 +354,50 @@ fail:
@@ -328,6 +354,53 @@ fail:
} \
} while (0)
+int ubus_dns_notify_has_subscribers(void)
+{
+ return (daemon->ubus && ubus_dns_object.has_subscribers);
+}
+
+struct blob_buf *ubus_dns_notify_prepare(void)
+{
+ struct ubus_context *ubus = (struct ubus_context *)daemon->ubus;
+
+ if (!ubus || !ubus_dns_object.has_subscribers)
+ if (!ubus_dns_notify_has_subscribers())
+ return NULL;
+
+ blob_buf_init(&b, 0);
@ -267,16 +286,3 @@
void ubus_event_bcast(const char *type, const char *mac, const char *ip, const char *name, const char *interface)
{
struct ubus_context *ubus = (struct ubus_context *)daemon->ubus;
--- a/src/dnsmasq.c
+++ b/src/dnsmasq.c
@@ -2003,6 +2003,10 @@ static void check_dns_listeners(time_t n
daemon->pipe_to_parent = pipefd[1];
}
+#ifdef HAVE_UBUS
+ drop_ubus_listeners();
+#endif
+
/* start with no upstream connections. */
for (s = daemon->servers; s; s = s->next)
s->tcpfd = -1;