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From 4d729e322fae359a1aefaafec1144764a54e8ad4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
Date: Mon, 6 Mar 2017 10:04:22 +0100
Subject: [PATCH] Fix CRLF injection in Wget host part
* src/url.c (url_parse): Reject control characters in host part of URL
Reported-by: Orange Tsai
Upstream-Status: Backport
[http://git.savannah.gnu.org/cgit/wget.git/commit/?id=4d729e322fae359a1aefaafec1144764a54e8ad4]
CVE: CVE-2017-6508
Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
---
src/url.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/src/url.c b/src/url.c
index 8f8ff0b..7d36b27 100644
--- a/src/url.c
+++ b/src/url.c
@@ -925,6 +925,17 @@ url_parse (const char *url, int *error, struct iri *iri, bool percent_encode)
url_unescape (u->host);
host_modified = true;
+ /* check for invalid control characters in host name */
+ for (p = u->host; *p; p++)
+ {
+ if (c_iscntrl(*p))
+ {
+ url_free(u);
+ error_code = PE_INVALID_HOST_NAME;
+ goto error;
+ }
+ }
+
/* Apply IDNA regardless of iri->utf8_encode status */
if (opt.enable_iri && iri)
{
--
2.7.4
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