avahi: backport CVE-2023-1981 & CVE's follow-up patches

import patches from ubuntu to fix
 CVE-2023-1981
 CVE-2023-38469-2
 CVE-2023-38470-2
 CVE-2023-38471-2

Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/avahi/tree/debian/patches?h=ubuntu/jammy-security
Upstream commit
https://github.com/lathiat/avahi/commit/a2696da2f2c50ac43b6c4903f72290d5c3fa9f6f
&
https://github.com/lathiat/avahi/commit/c6cab87df290448a63323c8ca759baa516166237
&
https://github.com/lathiat/avahi/commit/94cb6489114636940ac683515417990b55b5d66c
&
https://github.com/lathiat/avahi/commit/b675f70739f404342f7f78635d6e2dcd85a13460]

Ref: https://git.openembedded.org/openembedded-core-contrib/commit/?h=stable/nanbield-nut&id=a9203c46cd64c3ec5e5b00e381bbac85733f85df

(From OE-Core rev: 2b0d8a63a212897b33e85cc3694cd9a3d6e09ca8)

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/avahi/files/CVE-2023-38469-1.patch b/meta/recipes-connectivity/avahi/files/CVE-2023-38469-1.patch
new file mode 100644
index 0000000000..a078f66102
--- /dev/null
+++ b/meta/recipes-connectivity/avahi/files/CVE-2023-38469-1.patch
@@ -0,0 +1,48 @@
+From 72842945085cc3adaccfdfa2853771b0e75ef991 Mon Sep 17 00:00:00 2001
+From: Evgeny Vereshchagin <evvers@ya.ru>
+Date: Mon, 23 Oct 2023 20:29:31 +0000
+Subject: [PATCH] avahi: core: reject overly long TXT resource records
+
+Closes https://github.com/lathiat/avahi/issues/455
+
+Upstream-Status: Backport [https://github.com/lathiat/avahi/commit/a337a1ba7d15853fb56deef1f464529af6e3a1cf]
+CVE: CVE-2023-38469
+
+Signed-off-by: Meenali Gupta <meenali.gupta@windriver.com>
+---
+ avahi-core/rr.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/avahi-core/rr.c b/avahi-core/rr.c
+index 7fa0bee..b03a24c 100644
+--- a/avahi-core/rr.c
++++ b/avahi-core/rr.c
+@@ -32,6 +32,7 @@
+ #include <avahi-common/malloc.h>
+ #include <avahi-common/defs.h>
+
++#include "dns.h"
+ #include "rr.h"
+ #include "log.h"
+ #include "util.h"
+@@ -688,11 +689,17 @@ int avahi_record_is_valid(AvahiRecord *r) {
+         case AVAHI_DNS_TYPE_TXT: {
+
+             AvahiStringList *strlst;
++            size_t used = 0;
+
+-            for (strlst = r->data.txt.string_list; strlst; strlst = strlst->next)
++            for (strlst = r->data.txt.string_list; strlst; strlst = strlst->next) {
+                 if (strlst->size > 255 || strlst->size <= 0)
+                     return 0;
+
++                used += 1+strlst->size;
++                if (used > AVAHI_DNS_RDATA_MAX)
++                    return 0;
++            }
++
+             return 1;
+         }
+     }
+--
+2.40.0