diff options
Diffstat (limited to 'php-bug79877.patch')
| -rw-r--r-- | php-bug79877.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/php-bug79877.patch b/php-bug79877.patch new file mode 100644 index 0000000..25738d7 --- /dev/null +++ b/php-bug79877.patch @@ -0,0 +1,62 @@ +From 2c27d6bdd38bd8c4a27da5aded3477457e72c639 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Tue, 21 Jul 2020 11:07:43 +0200 +Subject: [PATCH] Fix #79877: getimagesize function silently truncates after a + null byte + +We have to check for NUL bytes if `getimagesize()` has been called. + +(cherry picked from commit ff577b04c0d250473a0ef46f8e332960fec3ca2c) +--- + NEWS | 4 ++++ + ext/standard/image.c | 5 +++++ + ext/standard/tests/image/bug79877.phpt | 9 +++++++++ + 3 files changed, 18 insertions(+) + create mode 100644 ext/standard/tests/image/bug79877.phpt + +diff --git a/NEWS b/NEWS +index 69361ae49a..2c340eb648 100644 +--- a/NEWS ++++ b/NEWS +@@ -3,6 +3,10 @@ PHP NEWS + + Backported from 7.2.33 + ++- Core: ++ . Fixed bug #79877 (getimagesize function silently truncates after a null ++ byte) (cmb) ++ + - Phar: + . Fixed bug #79797 (Use of freed hash key in the phar_parse_zipfile + function). (CVE-2020-7068) (cmb) +diff --git a/ext/standard/image.c b/ext/standard/image.c +index 1d999ca1b9..a5a86c2b52 100644 +--- a/ext/standard/image.c ++++ b/ext/standard/image.c +@@ -1474,6 +1474,11 @@ static void php_getimagesize_from_any(INTERNAL_FUNCTION_PARAMETERS, int mode) { + return; + } + ++ if (mode == FROM_PATH && CHECK_NULL_PATH(input, input_len)) { ++ php_error_docref(NULL, E_WARNING, "Invalid path"); ++ return; ++ } ++ + if (argc == 2) { + zval_dtor(info); + array_init(info); +diff --git a/ext/standard/tests/image/bug79877.phpt b/ext/standard/tests/image/bug79877.phpt +new file mode 100644 +index 0000000000..92e93e59e5 +--- /dev/null ++++ b/ext/standard/tests/image/bug79877.phpt +@@ -0,0 +1,9 @@ ++--TEST-- ++Bug #79877 (getimagesize function silently truncates after a null byte) ++--FILE-- ++<?php ++var_dump(getimagesize("/tmp/a.png\0xx")); ++?> ++--EXPECTF-- ++Warning: getimagesize(): Invalid path in %s on line %d ++NULL |