lighttpd: fix CVE-2019-11072

(From OE-Core rev: 0dbd16a40a28bb75962f38c6ce450c909c22ee79)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 52 insertions, 0 deletions

diff --git a/meta/recipes-extended/lighttpd/lighttpd/fix-http-parseopts.patch b/meta/recipes-extended/lighttpd/lighttpd/fix-http-parseopts.patch
new file mode 100644
index 0000000000..f3a0402c4b
--- /dev/null
+++ b/meta/recipes-extended/lighttpd/lighttpd/fix-http-parseopts.patch
@@ -0,0 +1,51 @@
+CVE: CVE-2019-11072
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 32120d5b8b3203fc21ccb9eafb0eaf824bb59354 Mon Sep 17 00:00:00 2001
+From: Glenn Strauss <gstrauss@gluelogic.com>
+Date: Wed, 10 Apr 2019 11:28:10 -0400
+Subject: [PATCH] [core] fix abort in http-parseopts (fixes #2945)
+
+fix abort in server.http-parseopts with url-path-2f-decode enabled
+
+(thx stze)
+
+x-ref:
+  "Security - SIGABRT during GET request handling with url-path-2f-decode enabled"
+  https://redmine.lighttpd.net/issues/2945
+---
+ src/burl.c        | 6 ++++--
+ src/t/test_burl.c | 2 ++
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/src/burl.c b/src/burl.c
+index 51182628..c4b928fd 100644
+--- a/src/burl.c
++++ b/src/burl.c
+@@ -252,8 +252,10 @@ static int burl_normalize_2F_to_slash_fix (buffer *b, int qs, int i)
+         }
+     }
+     if (qs >= 0) {
+-        memmove(s+j, s+qs, blen - qs);
+-        j += blen - qs;
++        const int qslen = blen - qs;
++        memmove(s+j, s+qs, (size_t)qslen);
++        qs = j;
++        j += qslen;
+     }
+     buffer_string_set_length(b, j);
+     return qs;
+diff --git a/src/t/test_burl.c b/src/t/test_burl.c
+index 7be9be50..f7a16815 100644
+--- a/src/t/test_burl.c
++++ b/src/t/test_burl.c
+@@ -97,6 +97,8 @@ static void test_burl_normalize (void) {
+     flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE;
+     run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/a/b?c=/"), CONST_STR_LEN("/a/b?c=/"));
+     run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/a/b?c=%2f"), CONST_STR_LEN("/a/b?c=/"));
++    run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("%2f?"), CONST_STR_LEN("/?"));
++    run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/%2f?"), CONST_STR_LEN("//?"));
+     run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/a%2fb"), CONST_STR_LEN("/a/b"));
+     run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/a%2Fb"), CONST_STR_LEN("/a/b"));
+     run_burl_normalize(psrc, ptmp, flags, __LINE__, CONST_STR_LEN("/a%2fb?c=/"), CONST_STR_LEN("/a/b?c=/"));
diff --git a/meta/recipes-extended/lighttpd/lighttpd_1.4.51.bb b/meta/recipes-extended/lighttpd/lighttpd_1.4.51.bb
index f28fd2f690..5c828da5b0 100644
--- a/meta/recipes-extended/lighttpd/lighttpd_1.4.51.bb
+++ b/meta/recipes-extended/lighttpd/lighttpd_1.4.51.bb
@@ -18,6 +18,7 @@ SRC_URI = "http://download.lighttpd.net/lighttpd/releases-1.4.x/lighttpd-${PV}.t
         file://lighttpd \
         file://lighttpd.service \
         file://0001-Use-pkg-config-for-pcre-dependency-instead-of-config.patch \
+        file://fix-http-parseopts.patch \
         "
 
 SRC_URI[md5sum] = "6e68c19601af332fa3c5f174245f59bf"