1 files changed, 111 insertions, 0 deletions
diff --git a/poky/meta/recipes-support/curl/curl/CVE-2023-28321.patch b/poky/meta/recipes-support/curl/curl/CVE-2023-28321.patch
new file mode 100644
index 0000000000..d328d83afa
--- /dev/null
+++ b/poky/meta/recipes-support/curl/curl/CVE-2023-28321.patch
@@ -0,0 +1,111 @@
+From 199f2d440d8659b42670c1b796220792b01a97bf Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Mon, 24 Apr 2023 21:07:02 +0200
+Subject: [PATCH] hostcheck: fix host name wildcard checking
+
+The leftmost "label" of the host name can now only match against single
+'*'. Like the browsers have worked for a long time.
+
+Reported-by: Hiroki Kurosawa
+Closes #11018
+
+CVE: CVE-2023-28321
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/199f2d440d8659b42]
+
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ lib/vtls/hostcheck.c    |  50 +++++++--------
+ 1 file changed, 202 insertions(+), 180 deletions(-)
+
+diff --git a/lib/vtls/hostcheck.c b/lib/vtls/hostcheck.c
+index e827dc58f..d061c6356 100644
+--- a/lib/vtls/hostcheck.c
++++ b/lib/vtls/hostcheck.c
+@@ -71,7 +71,12 @@ static bool pmatch(const char *hostname, size_t hostlen,
+  * apparent distinction between a name and an IP. We need to detect the use of
+  * an IP address and not wildcard match on such names.
+  *
++ * Only match on "*" being used for the leftmost label, not "a*", "a*b" nor
++ * "*b".
++ *
+  * Return TRUE on a match. FALSE if not.
++ *
++ * @unittest: 1397
+  */
+ 
+ static bool hostmatch(const char *hostname,
+@@ -79,53 +84,42 @@ static bool hostmatch(const char *hostname,
+                       const char *pattern,
+                       size_t patternlen)
+ {
+-  const char *pattern_label_end, *wildcard, *hostname_label_end;
+-  size_t prefixlen, suffixlen;
++  const char *pattern_label_end;
+ 
+-  /* normalize pattern and hostname by stripping off trailing dots */
++  DEBUGASSERT(pattern);
+   DEBUGASSERT(patternlen);
++  DEBUGASSERT(hostname);
++  DEBUGASSERT(hostlen);
++
++  /* normalize pattern and hostname by stripping off trailing dots */
+   if(hostname[hostlen-1]=='.')
+     hostlen--;
+   if(pattern[patternlen-1]=='.')
+     patternlen--;
+ 
+-  wildcard = memchr(pattern, '*', patternlen);
+-  if(!wildcard)
++  if(strncmp(pattern, "*.", 2))
+     return pmatch(hostname, hostlen, pattern, patternlen);
+ 
+   /* detect IP address as hostname and fail the match if so */
+-  if(Curl_host_is_ipnum(hostname))
++  else if(Curl_host_is_ipnum(hostname))
+     return FALSE;
+ 
+   /* We require at least 2 dots in the pattern to avoid too wide wildcard
+      match. */
+   pattern_label_end = memchr(pattern, '.', patternlen);
+   if(!pattern_label_end ||
+-     (memrchr(pattern, '.', patternlen) == pattern_label_end) ||
+-     strncasecompare(pattern, "xn--", 4))
++     (memrchr(pattern, '.', patternlen) == pattern_label_end))
+     return pmatch(hostname, hostlen, pattern, patternlen);
+-
+-  hostname_label_end = memchr(hostname, '.', hostlen);
+-  if(!hostname_label_end)
+-    return FALSE;
+   else {
+-    size_t skiphost = hostname_label_end - hostname;
+-    size_t skiplen = pattern_label_end - pattern;
+-    if(!pmatch(hostname_label_end, hostlen - skiphost,
+-               pattern_label_end, patternlen - skiplen))
+-      return FALSE;
++    const char *hostname_label_end = memchr(hostname, '.', hostlen);
++    if(hostname_label_end) {
++      size_t skiphost = hostname_label_end - hostname;
++      size_t skiplen = pattern_label_end - pattern;
++      return pmatch(hostname_label_end, hostlen - skiphost,
++                    pattern_label_end, patternlen - skiplen);
++    }
+   }
+-  /* The wildcard must match at least one character, so the left-most
+-     label of the hostname is at least as large as the left-most label
+-     of the pattern. */
+-  if(hostname_label_end - hostname < pattern_label_end - pattern)
+-    return FALSE;
+-
+-  prefixlen = wildcard - pattern;
+-  suffixlen = pattern_label_end - (wildcard + 1);
+-  return strncasecompare(pattern, hostname, prefixlen) &&
+-    strncasecompare(wildcard + 1, hostname_label_end - suffixlen,
+-                    suffixlen) ? TRUE : FALSE;
++  return FALSE;
+ }
+ 
+ /*
+-- 
+2.25.1
+