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-rw-r--r--main/libcroco/CVE-2017-7960.patch59
1 files changed, 59 insertions, 0 deletions
diff --git a/main/libcroco/CVE-2017-7960.patch b/main/libcroco/CVE-2017-7960.patch
new file mode 100644
index 0000000000..cd8dbaafa4
--- /dev/null
+++ b/main/libcroco/CVE-2017-7960.patch
@@ -0,0 +1,59 @@
+From 898e3a8c8c0314d2e6b106809a8e3e93cf9d4394 Mon Sep 17 00:00:00 2001
+From: Ignacio Casal Quinteiro <qignacio@amazon.com>
+Date: Sun, 16 Apr 2017 13:13:43 +0200
+Subject: [PATCH] input: check end of input before reading a byte
+
+When reading bytes we weren't check that the index wasn't
+out of bound and this could produce an invalid read which
+could deal to a security bug.
+---
+ src/cr-input.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/src/cr-input.c b/src/cr-input.c
+index 49000b1..3b63a88 100644
+--- a/src/cr-input.c
++++ b/src/cr-input.c
+@@ -256,7 +256,7 @@ cr_input_new_from_uri (const gchar * a_file_uri, enum CREncoding a_enc)
+ *we should free buf here because it's own by CRInput.
+ *(see the last parameter of cr_input_new_from_buf().
+ */
+- buf = NULL ;
++ buf = NULL;
+ }
+
+ cleanup:
+@@ -404,6 +404,8 @@ cr_input_get_nb_bytes_left (CRInput const * a_this)
+ enum CRStatus
+ cr_input_read_byte (CRInput * a_this, guchar * a_byte)
+ {
++ gulong nb_bytes_left = 0;
++
+ g_return_val_if_fail (a_this && PRIVATE (a_this)
+ && a_byte, CR_BAD_PARAM_ERROR);
+
+@@ -413,6 +415,12 @@ cr_input_read_byte (CRInput * a_this, guchar * a_byte)
+ if (PRIVATE (a_this)->end_of_input == TRUE)
+ return CR_END_OF_INPUT_ERROR;
+
++ nb_bytes_left = cr_input_get_nb_bytes_left (a_this);
++
++ if (nb_bytes_left < 1) {
++ return CR_END_OF_INPUT_ERROR;
++ }
++
+ *a_byte = PRIVATE (a_this)->in_buf[PRIVATE (a_this)->next_byte_index];
+
+ if (PRIVATE (a_this)->nb_bytes -
+@@ -477,7 +485,6 @@ cr_input_read_char (CRInput * a_this, guint32 * a_char)
+ if (*a_char == '\n') {
+ PRIVATE (a_this)->end_of_line = TRUE;
+ }
+-
+ }
+
+ return status;
+--
+2.21.0
+
+