diff options
Diffstat (limited to 'main/libcroco/CVE-2017-7960.patch')
| -rw-r--r-- | main/libcroco/CVE-2017-7960.patch | 59 |
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 00000000000..cd8dbaafa48 --- /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 + + |