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Fix segfault when calling strchr in http.c (#1511562)

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Signed-off-by: Tomas Hozza <thozza@redhat.com>
This commit is contained in:
Tomas Hozza 2017-12-08 17:09:00 +01:00
parent 1d92875e38
commit 0646b68da4
2 changed files with 53 additions and 1 deletions
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46
wget-1.19.2-fix-segfault-in-http-c.patch Normal file
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@ -0,0 +1,46 @@
diff --git a/src/http.c b/src/http.c
index dc31823..47de828 100644
--- a/src/http.c
+++ b/src/http.c
@@ -3712,22 +3712,30 @@ gethttp (const struct url *u, struct url *original_url, struct http_stat *hs,
&& opt.compression != compression_none)
{
/* Make sure the Content-Type is not gzip before decompressing */
- const char * p = strchr (type, '/');
- if (p == NULL)
- {
- hs->remote_encoding = ENC_GZIP;
- hs->local_encoding = ENC_NONE;
- }
- else
+ if (type)
{
- p++;
- if (c_tolower(p[0]) == 'x' && p[1] == '-')
- p += 2;
- if (0 != c_strcasecmp (p, "gzip"))
+ const char * p = strchr (type, '/');
+ if (p == NULL)
{
hs->remote_encoding = ENC_GZIP;
hs->local_encoding = ENC_NONE;
}
+ else
+ {
+ p++;
+ if (c_tolower(p[0]) == 'x' && p[1] == '-')
+ p += 2;
+ if (0 != c_strcasecmp (p, "gzip"))
+ {
+ hs->remote_encoding = ENC_GZIP;
+ hs->local_encoding = ENC_NONE;
+ }
+ }
+ }
+ else
+ {
+ hs->remote_encoding = ENC_GZIP;
+ hs->local_encoding = ENC_NONE;
}
}
#endif

8
wget.spec
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@ -1,13 +1,15 @@
Summary: A utility for retrieving files using the HTTP or FTP protocols
Name: wget
Version: 1.19.2
Release: 1%{?dist}
Release: 2%{?dist}
License: GPLv3+
Group: Applications/Internet
Url: http://www.gnu.org/software/wget/
Source: ftp://ftp.gnu.org/gnu/wget/wget-%{version}.tar.gz
Patch1: wget-1.17-path.patch
# http://git.savannah.gnu.org/cgit/wget.git/commit/?id=973c26ed7d51052a7b6e120ed1b84e47266667e1
Patch2: wget-1.19.2-fix-segfault-in-http-c.patch
Provides: webclient
Provides: bundled(gnulib)
@ -35,6 +37,7 @@ sed -i "s|\(PACKAGE_STRING='wget .*\)'|\1 (Red Hat modified)'|" configure
grep "PACKAGE_STRING='wget .* (Red Hat modified)'" configure || exit 1
%patch1 -p1 -b .path
%patch2 -p1 -b .http_segfault
%build
%configure \
@ -81,6 +84,9 @@ rm -rf $RPM_BUILD_ROOT
%{_infodir}/*
%changelog
* Fri Dec 08 2017 Tomas Hozza <thozza@redhat.com> - 1.19.2-2
- Fix segfault when calling strchr in http.c (#1511562)
* Fri Oct 27 2017 Tomas Hozza <thozza@redhat.com> - 1.19.2-1
- Update to latest upstream version due to CVE-2017-13089 CVE-2017-13090