curl: fix for CVE-2018-16839/CVE-2018-16840/CVE-2018-16842

(From OE-Core rev: 0f0db9fc8512a0ecd0cdba3304a195cd925a5029)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 113 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2018-16839.patch b/meta/recipes-support/curl/curl/CVE-2018-16839.patch
new file mode 100644
index 0000000000..bf972d2ed7
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2018-16839.patch
@@ -0,0 +1,35 @@
+From 55b90532f9190dce40a325b3312d014c66dc3ae1 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Thu, 1 Nov 2018 15:27:35 +0800
+Subject: [PATCH] Curl_auth_create_plain_message: fix too-large-input-check
+
+CVE-2018-16839
+Reported-by: Harry Sintonen
+Bug: https://curl.haxx.se/docs/CVE-2018-16839.html
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit
+/f3a24d7916b9173c69a3e0ee790102993833d6c5?diff=unified]
+
+CVE: CVE-2018-16839
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ lib/vauth/cleartext.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/vauth/cleartext.c b/lib/vauth/cleartext.c
+index 5d61ce6..1367143 100644
+--- a/lib/vauth/cleartext.c
++++ b/lib/vauth/cleartext.c
+@@ -74,7 +74,7 @@ CURLcode Curl_auth_create_plain_message(struct Curl_easy *data,
+   plen = strlen(passwdp);
+ 
+   /* Compute binary message length. Check for overflows. */
+-  if((ulen > SIZE_T_MAX/2) || (plen > (SIZE_T_MAX/2 - 2)))
++  if((ulen > SIZE_T_MAX/4) || (plen > (SIZE_T_MAX/2 - 2)))
+     return CURLE_OUT_OF_MEMORY;
+   plainlen = 2 * ulen + plen + 2;
+ 
+-- 
+2.7.4
+
diff --git a/meta/recipes-support/curl/curl/CVE-2018-16840.patch b/meta/recipes-support/curl/curl/CVE-2018-16840.patch
new file mode 100644
index 0000000000..3d086c4d90
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2018-16840.patch
@@ -0,0 +1,43 @@
+From 3c2846bec008e03d456e181d9ab55686da83f140 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Thu, 1 Nov 2018 15:33:35 +0800
+Subject: [PATCH] Curl_close: clear data->multi_easy on free to avoid
+ use-after-free
+
+Regression from b46cfbc (7.59.0)
+CVE-2018-16840
+Reported-by: Brian Carpenter (Geeknik Labs)
+
+Bug: https://curl.haxx.se/docs/CVE-2018-16840.html
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit/
+81d135d67155c5295b1033679c606165d4e28f3f]
+
+CVE: CVE-2018-16840
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ lib/url.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/lib/url.c b/lib/url.c
+index 27b2c1e..7ef7c20 100644
+--- a/lib/url.c
++++ b/lib/url.c
+@@ -320,10 +320,12 @@ CURLcode Curl_close(struct Curl_easy *data)
+        and detach this handle from there. */
+     curl_multi_remove_handle(data->multi, data);
+ 
+-  if(data->multi_easy)
++  if(data->multi_easy) {
+     /* when curl_easy_perform() is used, it creates its own multi handle to
+        use and this is the one */
+     curl_multi_cleanup(data->multi_easy);
++    data->multi_easy = NULL;
++  }
+ 
+   /* Destroy the timeout list that is held in the easy handle. It is
+      /normally/ done by curl_multi_remove_handle() but this is "just in
+-- 
+2.7.4
+
diff --git a/meta/recipes-support/curl/curl/CVE-2018-16842.patch b/meta/recipes-support/curl/curl/CVE-2018-16842.patch
new file mode 100644
index 0000000000..82e7557063
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2018-16842.patch
@@ -0,0 +1,35 @@
+From 0e4a6058b130f07cfa52fde8a3cb6f2abfe4c700 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Thu, 1 Nov 2018 15:30:56 +0800
+Subject: [PATCH] voutf: fix bad arethmetic when outputting warnings to stderr
+
+CVE-2018-16842
+Reported-by: Brian Carpenter
+Bug: https://curl.haxx.se/docs/CVE-2018-16842.html
+
+Upstream-Status: Backport [https://github.com/curl/curl/commit
+/d530e92f59ae9bb2d47066c3c460b25d2ffeb211]
+
+CVE: CVE-2018-16842
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ src/tool_msgs.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/tool_msgs.c b/src/tool_msgs.c
+index 9cce806..05bec39 100644
+--- a/src/tool_msgs.c
++++ b/src/tool_msgs.c
+@@ -67,7 +67,7 @@ static void voutf(struct GlobalConfig *config,
+         (void)fwrite(ptr, cut + 1, 1, config->errors);
+         fputs("\n", config->errors);
+         ptr += cut + 1; /* skip the space too */
+-        len -= cut;
++        len -= cut + 1;
+       }
+       else {
+         fputs(ptr, config->errors);
+-- 
+2.7.4
+