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artem-smotrakovartem-smotrakov
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Java: Added MVELRuntime.execute() sink for MVEL injections
1 parent fa717b2 commit df9d10f

4 files changed

Lines changed: 89 additions & 45 deletions

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‎java/ql/src/experimental/Security/CWE/CWE-094/MvelInjectionLib.qll‎

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -56,6 +56,11 @@ class MvelEvaluationSink extends DataFlow::ExprNode {
5656
) and
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(ma = asExpr() or ma.getQualifier() = asExpr())
5858
)
59+
or
60+
exists(StaticMethodAccess ma, Method m | m = ma.getMethod() |
61+
m instanceof MvelRuntimeEvaluationMethod and
62+
ma.getArgument(1) = asExpr()
63+
)
5964
}
6065
}
6166

@@ -308,6 +313,16 @@ class MvelCompiledScriptEvaluationMethod extends Method {
308313
}
309314
}
310315

316+
/**
317+
* Methods in `MVELRuntime` that evaluate a MVEL expression.
318+
*/
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class MvelRuntimeEvaluationMethod extends Method {
320+
MvelRuntimeEvaluationMethod() {
321+
getDeclaringType() instanceof MVELRuntime and
322+
hasName("execute")
323+
}
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}
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311326
class MVEL extends RefType {
312327
MVEL() { hasQualifiedName("org.mvel2", "MVEL") }
313328
}
@@ -351,3 +366,7 @@ class TemplateRuntime extends RefType {
351366
class TemplateCompiler extends RefType {
352367
TemplateCompiler() { hasQualifiedName("org.mvel2.templates", "TemplateCompiler") }
353368
}
369+
370+
class MVELRuntime extends RefType {
371+
MVELRuntime() { hasQualifiedName("org.mvel2", "MVELRuntime") }
372+
}

‎java/ql/test/experimental/Security/CWE/CWE-094/MvelInjection.expected‎

Lines changed: 49 additions & 45 deletions
Original file line numberDiff line numberDiff line change
@@ -1,49 +1,53 @@
11
edges
2-
| MvelInjection.java:24:27:24:49 | getInputStream(...) : InputStream | MvelInjection.java:28:17:28:21 | input |
3-
| MvelInjection.java:33:27:33:49 | getInputStream(...) : InputStream | MvelInjection.java:38:30:38:39 | expression |
4-
| MvelInjection.java:43:27:43:49 | getInputStream(...) : InputStream | MvelInjection.java:49:7:49:15 | statement |
5-
| MvelInjection.java:43:27:43:49 | getInputStream(...) : InputStream | MvelInjection.java:50:7:50:15 | statement |
6-
| MvelInjection.java:55:27:55:49 | getInputStream(...) : InputStream | MvelInjection.java:61:7:61:16 | expression |
7-
| MvelInjection.java:66:27:66:49 | getInputStream(...) : InputStream | MvelInjection.java:71:7:71:16 | expression |
8-
| MvelInjection.java:76:22:76:44 | getInputStream(...) : InputStream | MvelInjection.java:84:5:84:18 | compiledScript |
9-
| MvelInjection.java:76:22:76:44 | getInputStream(...) : InputStream | MvelInjection.java:87:21:87:26 | script |
10-
| MvelInjection.java:91:22:91:44 | getInputStream(...) : InputStream | MvelInjection.java:101:5:101:10 | script |
11-
| MvelInjection.java:105:22:105:44 | getInputStream(...) : InputStream | MvelInjection.java:111:26:111:30 | input |
12-
| MvelInjection.java:115:22:115:44 | getInputStream(...) : InputStream | MvelInjection.java:121:29:121:67 | compileTemplate(...) |
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| MvelInjection.java:125:22:125:44 | getInputStream(...) : InputStream | MvelInjection.java:132:54:132:71 | compile(...) |
2+
| MvelInjection.java:25:27:25:49 | getInputStream(...) : InputStream | MvelInjection.java:29:17:29:21 | input |
3+
| MvelInjection.java:34:27:34:49 | getInputStream(...) : InputStream | MvelInjection.java:39:30:39:39 | expression |
4+
| MvelInjection.java:44:27:44:49 | getInputStream(...) : InputStream | MvelInjection.java:50:7:50:15 | statement |
5+
| MvelInjection.java:44:27:44:49 | getInputStream(...) : InputStream | MvelInjection.java:51:7:51:15 | statement |
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| MvelInjection.java:56:27:56:49 | getInputStream(...) : InputStream | MvelInjection.java:62:7:62:16 | expression |
7+
| MvelInjection.java:67:27:67:49 | getInputStream(...) : InputStream | MvelInjection.java:72:7:72:16 | expression |
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| MvelInjection.java:77:22:77:44 | getInputStream(...) : InputStream | MvelInjection.java:85:5:85:18 | compiledScript |
9+
| MvelInjection.java:77:22:77:44 | getInputStream(...) : InputStream | MvelInjection.java:88:21:88:26 | script |
10+
| MvelInjection.java:92:22:92:44 | getInputStream(...) : InputStream | MvelInjection.java:102:5:102:10 | script |
11+
| MvelInjection.java:106:22:106:44 | getInputStream(...) : InputStream | MvelInjection.java:112:26:112:30 | input |
12+
| MvelInjection.java:116:22:116:44 | getInputStream(...) : InputStream | MvelInjection.java:122:29:122:67 | compileTemplate(...) |
13+
| MvelInjection.java:126:22:126:44 | getInputStream(...) : InputStream | MvelInjection.java:133:54:133:71 | compile(...) |
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| MvelInjection.java:137:22:137:44 | getInputStream(...) : InputStream | MvelInjection.java:145:32:145:41 | expression |
1415
nodes
15-
| MvelInjection.java:24:27:24:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:28:17:28:21 | input | semmle.label | input |
17-
| MvelInjection.java:33:27:33:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
18-
| MvelInjection.java:38:30:38:39 | expression | semmle.label | expression |
19-
| MvelInjection.java:43:27:43:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
20-
| MvelInjection.java:49:7:49:15 | statement | semmle.label | statement |
16+
| MvelInjection.java:25:27:25:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
17+
| MvelInjection.java:29:17:29:21 | input | semmle.label | input |
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| MvelInjection.java:34:27:34:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:39:30:39:39 | expression | semmle.label | expression |
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| MvelInjection.java:44:27:44:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:50:7:50:15 | statement | semmle.label | statement |
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| MvelInjection.java:55:27:55:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:61:7:61:16 | expression | semmle.label | expression |
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| MvelInjection.java:66:27:66:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:71:7:71:16 | expression | semmle.label | expression |
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| MvelInjection.java:76:22:76:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:84:5:84:18 | compiledScript | semmle.label | compiledScript |
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| MvelInjection.java:87:21:87:26 | script | semmle.label | script |
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| MvelInjection.java:91:22:91:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:101:5:101:10 | script | semmle.label | script |
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| MvelInjection.java:105:22:105:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
32-
| MvelInjection.java:111:26:111:30 | input | semmle.label | input |
33-
| MvelInjection.java:115:22:115:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:121:29:121:67 | compileTemplate(...) | semmle.label | compileTemplate(...) |
35-
| MvelInjection.java:125:22:125:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
36-
| MvelInjection.java:132:54:132:71 | compile(...) | semmle.label | compile(...) |
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| MvelInjection.java:51:7:51:15 | statement | semmle.label | statement |
23+
| MvelInjection.java:56:27:56:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
24+
| MvelInjection.java:62:7:62:16 | expression | semmle.label | expression |
25+
| MvelInjection.java:67:27:67:49 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
26+
| MvelInjection.java:72:7:72:16 | expression | semmle.label | expression |
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| MvelInjection.java:77:22:77:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:85:5:85:18 | compiledScript | semmle.label | compiledScript |
29+
| MvelInjection.java:88:21:88:26 | script | semmle.label | script |
30+
| MvelInjection.java:92:22:92:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
31+
| MvelInjection.java:102:5:102:10 | script | semmle.label | script |
32+
| MvelInjection.java:106:22:106:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
33+
| MvelInjection.java:112:26:112:30 | input | semmle.label | input |
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| MvelInjection.java:116:22:116:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:122:29:122:67 | compileTemplate(...) | semmle.label | compileTemplate(...) |
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| MvelInjection.java:126:22:126:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
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| MvelInjection.java:133:54:133:71 | compile(...) | semmle.label | compile(...) |
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| MvelInjection.java:137:22:137:44 | getInputStream(...) : InputStream | semmle.label | getInputStream(...) : InputStream |
39+
| MvelInjection.java:145:32:145:41 | expression | semmle.label | expression |
3740
#select
38-
| MvelInjection.java:28:17:28:21 | input | MvelInjection.java:24:27:24:49 | getInputStream(...) : InputStream | MvelInjection.java:28:17:28:21 | input | MVEL injection from $@. | MvelInjection.java:24:27:24:49 | getInputStream(...) | this user input |
39-
| MvelInjection.java:38:30:38:39 | expression | MvelInjection.java:33:27:33:49 | getInputStream(...) : InputStream | MvelInjection.java:38:30:38:39 | expression | MVEL injection from $@. | MvelInjection.java:33:27:33:49 | getInputStream(...) | this user input |
40-
| MvelInjection.java:49:7:49:15 | statement | MvelInjection.java:43:27:43:49 | getInputStream(...) : InputStream | MvelInjection.java:49:7:49:15 | statement | MVEL injection from $@. | MvelInjection.java:43:27:43:49 | getInputStream(...) | this user input |
41-
| MvelInjection.java:50:7:50:15 | statement | MvelInjection.java:43:27:43:49 | getInputStream(...) : InputStream | MvelInjection.java:50:7:50:15 | statement | MVEL injection from $@. | MvelInjection.java:43:27:43:49 | getInputStream(...) | this user input |
42-
| MvelInjection.java:61:7:61:16 | expression | MvelInjection.java:55:27:55:49 | getInputStream(...) : InputStream | MvelInjection.java:61:7:61:16 | expression | MVEL injection from $@. | MvelInjection.java:55:27:55:49 | getInputStream(...) | this user input |
43-
| MvelInjection.java:71:7:71:16 | expression | MvelInjection.java:66:27:66:49 | getInputStream(...) : InputStream | MvelInjection.java:71:7:71:16 | expression | MVEL injection from $@. | MvelInjection.java:66:27:66:49 | getInputStream(...) | this user input |
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| MvelInjection.java:84:5:84:18 | compiledScript | MvelInjection.java:76:22:76:44 | getInputStream(...) : InputStream | MvelInjection.java:84:5:84:18 | compiledScript | MVEL injection from $@. | MvelInjection.java:76:22:76:44 | getInputStream(...) | this user input |
45-
| MvelInjection.java:87:21:87:26 | script | MvelInjection.java:76:22:76:44 | getInputStream(...) : InputStream | MvelInjection.java:87:21:87:26 | script | MVEL injection from $@. | MvelInjection.java:76:22:76:44 | getInputStream(...) | this user input |
46-
| MvelInjection.java:101:5:101:10 | script | MvelInjection.java:91:22:91:44 | getInputStream(...) : InputStream | MvelInjection.java:101:5:101:10 | script | MVEL injection from $@. | MvelInjection.java:91:22:91:44 | getInputStream(...) | this user input |
47-
| MvelInjection.java:111:26:111:30 | input | MvelInjection.java:105:22:105:44 | getInputStream(...) : InputStream | MvelInjection.java:111:26:111:30 | input | MVEL injection from $@. | MvelInjection.java:105:22:105:44 | getInputStream(...) | this user input |
48-
| MvelInjection.java:121:29:121:67 | compileTemplate(...) | MvelInjection.java:115:22:115:44 | getInputStream(...) : InputStream | MvelInjection.java:121:29:121:67 | compileTemplate(...) | MVEL injection from $@. | MvelInjection.java:115:22:115:44 | getInputStream(...) | this user input |
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| MvelInjection.java:132:54:132:71 | compile(...) | MvelInjection.java:125:22:125:44 | getInputStream(...) : InputStream | MvelInjection.java:132:54:132:71 | compile(...) | MVEL injection from $@. | MvelInjection.java:125:22:125:44 | getInputStream(...) | this user input |
41+
| MvelInjection.java:29:17:29:21 | input | MvelInjection.java:25:27:25:49 | getInputStream(...) : InputStream | MvelInjection.java:29:17:29:21 | input | MVEL injection from $@. | MvelInjection.java:25:27:25:49 | getInputStream(...) | this user input |
42+
| MvelInjection.java:39:30:39:39 | expression | MvelInjection.java:34:27:34:49 | getInputStream(...) : InputStream | MvelInjection.java:39:30:39:39 | expression | MVEL injection from $@. | MvelInjection.java:34:27:34:49 | getInputStream(...) | this user input |
43+
| MvelInjection.java:50:7:50:15 | statement | MvelInjection.java:44:27:44:49 | getInputStream(...) : InputStream | MvelInjection.java:50:7:50:15 | statement | MVEL injection from $@. | MvelInjection.java:44:27:44:49 | getInputStream(...) | this user input |
44+
| MvelInjection.java:51:7:51:15 | statement | MvelInjection.java:44:27:44:49 | getInputStream(...) : InputStream | MvelInjection.java:51:7:51:15 | statement | MVEL injection from $@. | MvelInjection.java:44:27:44:49 | getInputStream(...) | this user input |
45+
| MvelInjection.java:62:7:62:16 | expression | MvelInjection.java:56:27:56:49 | getInputStream(...) : InputStream | MvelInjection.java:62:7:62:16 | expression | MVEL injection from $@. | MvelInjection.java:56:27:56:49 | getInputStream(...) | this user input |
46+
| MvelInjection.java:72:7:72:16 | expression | MvelInjection.java:67:27:67:49 | getInputStream(...) : InputStream | MvelInjection.java:72:7:72:16 | expression | MVEL injection from $@. | MvelInjection.java:67:27:67:49 | getInputStream(...) | this user input |
47+
| MvelInjection.java:85:5:85:18 | compiledScript | MvelInjection.java:77:22:77:44 | getInputStream(...) : InputStream | MvelInjection.java:85:5:85:18 | compiledScript | MVEL injection from $@. | MvelInjection.java:77:22:77:44 | getInputStream(...) | this user input |
48+
| MvelInjection.java:88:21:88:26 | script | MvelInjection.java:77:22:77:44 | getInputStream(...) : InputStream | MvelInjection.java:88:21:88:26 | script | MVEL injection from $@. | MvelInjection.java:77:22:77:44 | getInputStream(...) | this user input |
49+
| MvelInjection.java:102:5:102:10 | script | MvelInjection.java:92:22:92:44 | getInputStream(...) : InputStream | MvelInjection.java:102:5:102:10 | script | MVEL injection from $@. | MvelInjection.java:92:22:92:44 | getInputStream(...) | this user input |
50+
| MvelInjection.java:112:26:112:30 | input | MvelInjection.java:106:22:106:44 | getInputStream(...) : InputStream | MvelInjection.java:112:26:112:30 | input | MVEL injection from $@. | MvelInjection.java:106:22:106:44 | getInputStream(...) | this user input |
51+
| MvelInjection.java:122:29:122:67 | compileTemplate(...) | MvelInjection.java:116:22:116:44 | getInputStream(...) : InputStream | MvelInjection.java:122:29:122:67 | compileTemplate(...) | MVEL injection from $@. | MvelInjection.java:116:22:116:44 | getInputStream(...) | this user input |
52+
| MvelInjection.java:133:54:133:71 | compile(...) | MvelInjection.java:126:22:126:44 | getInputStream(...) : InputStream | MvelInjection.java:133:54:133:71 | compile(...) | MVEL injection from $@. | MvelInjection.java:126:22:126:44 | getInputStream(...) | this user input |
53+
| MvelInjection.java:145:32:145:41 | expression | MvelInjection.java:137:22:137:44 | getInputStream(...) : InputStream | MvelInjection.java:145:32:145:41 | expression | MVEL injection from $@. | MvelInjection.java:137:22:137:44 | getInputStream(...) | this user input |

‎java/ql/test/experimental/Security/CWE/CWE-094/MvelInjection.java‎

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -6,6 +6,7 @@
66
import javax.script.CompiledScript;
77
import javax.script.SimpleScriptContext;
88
import org.mvel2.MVEL;
9+
import org.mvel2.MVELRuntime;
910
import org.mvel2.ParserContext;
1011
import org.mvel2.compiler.CompiledAccExpression;
1112
import org.mvel2.compiler.CompiledExpression;
@@ -131,4 +132,16 @@ public static void testTemplateRuntimeCompileAndExecute(Socket socket) throws Ex
131132
TemplateCompiler compiler = new TemplateCompiler(input);
132133
String output = (String) TemplateRuntime.execute(compiler.compile(), new HashMap());
133134
}
135+
136+
public static void testMvelRuntimeExecute(Socket socket) throws Exception {
137+
InputStream in = socket.getInputStream();
138+
139+
byte[] bytes = new byte[1024];
140+
int n = in.read(bytes);
141+
String input = new String(bytes, 0, n);
142+
143+
ExpressionCompiler compiler = new ExpressionCompiler(input);
144+
CompiledExpression expression = compiler.compile();
145+
MVELRuntime.execute(false, expression, new Object(), new ImmutableDefaultFactory());
146+
}
134147
}

‎java/ql/test/stubs/mvel2-2.4.7/org/mvel2/MVELRuntime.java‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
1+
package org.mvel2;
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3+
import org.mvel2.compiler.CompiledExpression;
4+
import org.mvel2.integration.VariableResolverFactory;
5+
6+
public class MVELRuntime {
7+
public static Object execute(boolean debugger, CompiledExpression expression, Object ctx, VariableResolverFactory variableFactory) { return null; }
8+
}

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