curl: CVE-2016-8620

glob parser write/read out of bounds

Affected versions: curl 7.34.0 to and including 7.50.3
Reference:
https://curl.haxx.se/docs/adv_20161102F.html

(From OE-Core rev: 7308140d81299dca7db98259461d60e0fe86878e)

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>

meta/recipes-support/curl/curl/CVE-2016-8620.patch

@@ -0,0 +1,44 @@
+From fbb5f1aa0326d485d5a7ac643b48481897ca667f Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Mon, 3 Oct 2016 17:27:16 +0200
+Subject: [PATCH] range: prevent negative end number in a glob range
+
+CVE: CVE-2016-8620
+
+Upstream-Status: Backport
+
+Bug: https://curl.haxx.se/docs/adv_20161102F.html
+Reported-by: Luật Nguyễn
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+---
+ src/tool_urlglob.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/tool_urlglob.c b/src/tool_urlglob.c
+index a357b8b..64c75ba 100644
+--- a/src/tool_urlglob.c
++++ b/src/tool_urlglob.c
+@@ -257,6 +257,12 @@ static CURLcode glob_range(URLGlob *glob, char **patternp,
+         endp = NULL;
+       else {
+         pattern = endp+1;
++        while(*pattern && ISBLANK(*pattern))
++          pattern++;
++        if(!ISDIGIT(*pattern)) {
++          endp = NULL;
++          goto fail;
++        }
+         errno = 0;
+         max_n = strtoul(pattern, &endp, 10);
+         if(errno || (*endp == ':')) {
+@@ -277,6 +283,7 @@ static CURLcode glob_range(URLGlob *glob, char **patternp,
+       }
+     }
+ 
++    fail:
+     *posp += (pattern - *patternp);
+ 
+     if(!endp || (min_n > max_n) || (step_n > (max_n - min_n)) || !step_n)
+-- 
+1.9.1
+

meta/recipes-support/curl/curl_7.47.1.bb

@@ -20,6 +20,7 @@ SRC_URI += " file://configure_ac.patch \
              file://CVE-2016-8617.patch \
              file://CVE-2016-8618.patch \
              file://CVE-2016-8619.patch \
+             file://CVE-2016-8620.patch \
            "
 
 SRC_URI[md5sum] = "9ea3123449439bbd960cd25cf98796fb"