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>

1 files changed, 35 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
+