wget: fix CVE-2019-5953

(From OE-Core rev: db17c2467af57a802f29a423ce1e9f0508bff5fe)

Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 35 insertions, 0 deletions

diff --git a/meta/recipes-extended/wget/wget/CVE-2019-5953.patch b/meta/recipes-extended/wget/wget/CVE-2019-5953.patch
new file mode 100644
index 0000000000..00efe20a2f
--- /dev/null
+++ b/meta/recipes-extended/wget/wget/CVE-2019-5953.patch
@@ -0,0 +1,34 @@
+From 692d5c5215de0db482c252492a92fc424cc6a97c Mon Sep 17 00:00:00 2001
+From: Tim Ruehsen <tim.ruehsen@gmx.de>
+Date: Fri, 5 Apr 2019 11:50:44 +0200
+Subject: Fix a buffer overflow vulnerability
+
+* src/iri.c(do_conversion): Reallocate the output buffer to a larger
+  size if it is already full
+Upstream-Status: Backport
+CVE: CVE-2019-5953
+Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
+---
+--- a/src/iri.c
++++ b/src/iri.c
+@@ -188,11 +191,14 @@ do_conversion (const char *tocode, const char *fromcode, char const *in_org, siz
+         }
+       else if (errno == E2BIG) /* Output buffer full */
+         {
++          logprintf (LOG_VERBOSE,
++                    _("Reallocate output buffer len=%d outlen=%d inlen=%d\n"), len, outlen, inlen);
+           tooshort++;
+           done = len;
+-          len = outlen = done + inlen * 2;
+-          s = xrealloc (s, outlen + 1);
+-          *out = s + done;
++          len = done + inlen * 2;
++          s = xrealloc (s, len + 1);
++          *out = s + done - outlen;
++          outlen += inlen * 2;
+         }
+       else /* Weird, we got an unspecified error */
+         {
+-- 
+cgit v1.0-41-gc330
+
diff --git a/meta/recipes-extended/wget/wget_1.20.1.bb b/meta/recipes-extended/wget/wget_1.20.1.bb
index d176bd0acd..e852a0c0cf 100644
--- a/meta/recipes-extended/wget/wget_1.20.1.bb
+++ b/meta/recipes-extended/wget/wget_1.20.1.bb
@@ -1,5 +1,6 @@
 SRC_URI = "${GNU_MIRROR}/wget/wget-${PV}.tar.gz \
            file://0002-improve-reproducibility.patch \
+           file://CVE-2019-5953.patch \
           "
 
 SRC_URI[md5sum] = "f6ebe9c7b375fc9832fb1b2028271fb7"