-
Notifications
You must be signed in to change notification settings - Fork 88
/
default.rules
130 lines (106 loc) · 7.25 KB
/
default.rules
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
# This is the default configuration file for Snuffleupagus (https://snuffleupagus.rtfd.io).
# It contains "reasonable" defaults that won't break your websites,
# and a lot of commented directives that you can enable if you want to
# have a better protection.
# Harden the PRNG
sp.harden_random.enable();
# Enable XXE protection
@condition extension_loaded("xml");
sp.xxe_protection.enable();
@end_condition;
# Global configuration variables
# sp.global.secret_key("YOU _DO_ NEED TO CHANGE THIS WITH SOME RANDOM CHARACTERS.");
# Globally activate strict mode
# https://www.php.net/manual/en/language.types.declarations.php#language.types.declarations.strict
# sp.global_strict.enable();
# Prevent unserialize-related exploits
# sp.unserialize_hmac.enable();
# Only allow execution of read-only files. This is a low-hanging fruit that you should enable.
# sp.readonly_exec.enable();
# PHP has a lot of wrappers, most of them aren't usually useful, you should
# only enable the ones you're using.
# sp.wrappers_whitelist.list("file,php,phar");
# Prevent sloppy comparisons.
# sp.sloppy_comparison.enable();
# Use SameSite on session cookie
# https://snuffleupagus.readthedocs.io/features.html#protection-against-cross-site-request-forgery
sp.cookie.name("PHPSESSID").samesite("lax");
# Harden the `chmod` function (0777 (oct = 511, 0666 = 438)
sp.disable_function.function("chmod").param("mode").value("438").drop();
sp.disable_function.function("chmod").param("mode").value("511").drop();
# Prevent various `mail`-related vulnerabilities
sp.disable_function.function("mail").param("additional_parameters").value_r("\\-").drop();
# Since it's now burned, me might as well mitigate it publicly
sp.disable_function.function("putenv").param("setting").value_r("LD_").drop()
sp.disable_function.function("putenv").param("setting").value("PATH").drop()
# This one was burned in Nov 2019 - https://gist.github.com/LoadLow/90b60bd5535d6c3927bb24d5f9955b80
sp.disable_function.function("putenv").param("setting").value_r("GCONV_").drop()
# Since people are stupid enough to use `extract` on things like $_GET or $_POST, we might as well mitigate this vector
sp.disable_function.function("extract").pos("0").value_r("^_").drop()
sp.disable_function.function("extract").pos("1").value("0").drop()
# This is also burned:
# ini_set('open_basedir','..');chdir('..');…;chdir('..');ini_set('open_basedir','/');echo(file_get_contents('/etc/passwd'));
# Since we have no way of matching on two parameters at the same time, we're
# blocking calls to open_basedir altogether: nobody is using it via ini_set anyway.
# Moreover, there are non-public bypasses that are also using this vector ;)
sp.disable_function.function("ini_set").param("varname").value_r("open_basedir").drop()
# Prevent various `include`-related vulnerabilities
sp.disable_function.function("require_once").value_r("\.(inc|phtml|php)$").allow();
sp.disable_function.function("include_once").value_r("\.(inc|phtml|php)$").allow();
sp.disable_function.function("require").value_r("\.(inc|phtml|php)$").allow();
sp.disable_function.function("include").value_r("\.(inc|phtml|php)$").allow();
sp.disable_function.function("require_once").drop()
sp.disable_function.function("include_once").drop()
sp.disable_function.function("require").drop()
sp.disable_function.function("include").drop()
# Prevent `system`-related injections
sp.disable_function.function("system").param("command").value_r("[$|;&`\\n\\(\\)\\\\]").drop();
sp.disable_function.function("shell_exec").pos("0").value_r("[$|;&`\\n\\(\\)\\\\]").drop();
sp.disable_function.function("exec").param("command").value_r("[$|;&`\\n\\(\\)\\\\]").drop();
sp.disable_function.function("proc_open").param("command").value_r("[$|;&`\\n\\(\\)\\\\]").drop();
# Prevent runtime modification of interesting things
sp.disable_function.function("ini_set").param("varname").value("assert.active").drop();
sp.disable_function.function("ini_set").param("varname").value("zend.assertions").drop();
sp.disable_function.function("ini_set").param("varname").value("memory_limit").drop();
sp.disable_function.function("ini_set").param("varname").value("include_path").drop();
sp.disable_function.function("ini_set").param("varname").value("open_basedir").drop();
# Detect some backdoors via environment recon
sp.disable_function.function("ini_get").param("varname").value("allow_url_fopen").drop();
sp.disable_function.function("ini_get").param("varname").value("open_basedir").drop();
sp.disable_function.function("ini_get").param("varname").value_r("suhosin").drop();
sp.disable_function.function("function_exists").param("function_name").value("eval").drop();
sp.disable_function.function("function_exists").param("function_name").value("exec").drop();
sp.disable_function.function("function_exists").param("function_name").value("system").drop();
sp.disable_function.function("function_exists").param("function_name").value("shell_exec").drop();
sp.disable_function.function("function_exists").param("function_name").value("proc_open").drop();
sp.disable_function.function("function_exists").param("function_name").value("passthru").drop();
sp.disable_function.function("is_callable").param("var").value("eval").drop();
sp.disable_function.function("is_callable").param("var").value("exec").drop();
sp.disable_function.function("is_callable").param("var").value("system").drop();
sp.disable_function.function("is_callable").param("var").value("shell_exec").drop();
sp.disable_function.function("is_callable").param("var").value("proc_open").drop();
sp.disable_function.function("is_callable").param("var").value("passthru").drop();
# Ghetto error-based sqli detection
# sp.disable_function.function("mysql_query").ret("FALSE").drop();
# sp.disable_function.function("mysqli_query").ret("FALSE").drop();
# sp.disable_function.function("PDO::query").ret("FALSE").drop();
# Ensure that certificates are properly verified
sp.disable_function.function("curl_setopt").param("value").value("1").allow();
sp.disable_function.function("curl_setopt").param("value").value("2").allow();
# `81` is SSL_VERIFYHOST and `64` SSL_VERIFYPEER
sp.disable_function.function("curl_setopt").param("option").value("64").drop().alias("Please don't turn CURLOPT_SSL_VERIFYCLIENT off.");
sp.disable_function.function("curl_setopt").param("option").value("81").drop().alias("Please don't turn CURLOPT_SSL_VERIFYHOST off.");
# Ensure that file:// protocol is not allowed in CURL
sp.disable_function.function("curl_setopt").param("value").value_r("file://").drop().alias("file:// protocol is disabled");
sp.disable_function.function("curl_init").param("url").value_r("file://").drop().alias("file:// protocol is disabled");
# File upload
# On old PHP7 versions
#sp.disable_function.function("move_uploaded_file").param("destination").value_r("\\.ph").drop();
#sp.disable_function.function("move_uploaded_file").param("destination").value_r("\\.ht").drop();
# On PHP7.4+
sp.disable_function.function("move_uploaded_file").param("new_path").value_r("\\.ph").drop();
sp.disable_function.function("move_uploaded_file").param("new_path").value_r("\\.ht").drop();
# Logging lockdown
sp.disable_function.function("ini_set").param("varname").value_r("error_log").drop()
sp.disable_function.function("ini_set").param("varname").value_r("error_reporting").drop()
sp.disable_function.function("ini_set").param("varname").value_r("display_errors").drop()