curl: CVE-2016-8624

invalid URL parsing with '#'

Affected versions: curl 7.1 to and including 7.50.3
Reference:
https://curl.haxx.se/docs/adv_20161102J.html

(From OE-Core rev: 3127e968c9e9bb2ba302553ba4eeeb030b1eee53)

Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 52 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2016-8624.patch b/meta/recipes-support/curl/curl/CVE-2016-8624.patch
new file mode 100644
index 0000000000..009f7d0601
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2016-8624.patch
@@ -0,0 +1,51 @@
+From 3bb273db7e40ebc284cff45f3ce3f0475c8339c2 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Tue, 11 Oct 2016 00:48:35 +0200
+Subject: [PATCH] urlparse: accept '#' as end of host name
+
+'http://example.com#@127.0.0.1/x.txt' equals a request to example.com
+for the '/' document with the rest of the URL being a fragment.
+
+CVE: CVE-2016-8624
+Upstream-Status: Backport
+
+Bug: https://curl.haxx.se/docs/adv_20161102J.html
+Reported-by: Fernando Muñoz
+
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+
+diff -ruN a/lib/url.c b/lib/url.c
+--- a/lib/url.c 2016-11-07 08:50:23.030126833 +0100
++++ b/lib/url.c 2016-11-07 10:16:13.562089428 +0100
+@@ -4086,7 +4086,7 @@
+     path[0]=0;
+ 
+     if(2 > sscanf(data->change.url,
+-                   "%15[^\n:]://%[^\n/?]%[^\n]",
++                   "%15[^\n:]://%[^\n/?#]%[^\n]",
+                    protobuf,
+                    conn->host.name, path)) {
+ 
+@@ -4094,7 +4094,7 @@
+        * The URL was badly formatted, let's try the browser-style _without_
+        * protocol specified like 'http://'.
+        */
+-      rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
++      rc = sscanf(data->change.url, "%[^\n/?#]%[^\n]", conn->host.name, path);
+       if(1 > rc) {
+         /*
+          * We couldn't even get this format.
+@@ -4184,10 +4184,10 @@
+   }
+ 
+   /* If the URL is malformatted (missing a '/' after hostname before path) we
+-   * insert a slash here. The only letter except '/' we accept to start a path
+-   * is '?'.
++   * insert a slash here. The only letters except '/' that can start a path is
++   * '?' and '#' - as controlled by the two sscanf() patterns above.
+    */
+-  if(path[0] == '?') {
++  if(path[0] != '/') {
+     /* We need this function to deal with overlapping memory areas. We know
+        that the memory area 'path' points to is 'urllen' bytes big and that
+        is bigger than the path. Use +1 to move the zero byte too. */
diff --git a/meta/recipes-support/curl/curl_7.47.1.bb b/meta/recipes-support/curl/curl_7.47.1.bb
index 0f8fa3ab6f..3c877e4dc2 100644
--- a/meta/recipes-support/curl/curl_7.47.1.bb
+++ b/meta/recipes-support/curl/curl_7.47.1.bb
@@ -24,6 +24,7 @@ SRC_URI += " file://configure_ac.patch \
              file://CVE-2016-8621.patch \
              file://CVE-2016-8622.patch \
              file://CVE-2016-8623.patch \
+             file://CVE-2016-8624.patch \
            "
 
 SRC_URI[md5sum] = "9ea3123449439bbd960cd25cf98796fb"