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Note that FEATURE_SECURE_PROCESSING isn't a sufficient defence against XXE

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This commit is contained in:
Chris Smowton
2021-11-25 12:21:24 +00:00
parent 609d6011a2
commit 9eb9eb606e
3 changed files with 6 additions and 11 deletions
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4
java/ql/test/query-tests/security/CWE-611/DocumentBuilderTests.java
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@@ -25,14 +25,14 @@ class DocumentBuilderTests {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.parse(sock.getInputStream()); //safe
builder.parse(sock.getInputStream()); //unsafe -- secure-processing by itself is insufficient
}
public void enableSecurityFeature2(Socket sock) throws Exception {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setFeature("http://javax.xml.XMLConstants/feature/secure-processing", true);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.parse(sock.getInputStream()); //safe
builder.parse(sock.getInputStream()); //safe -- secure-processing by itself is insufficient
}
public void enableDTD(Socket sock) throws Exception {

4
java/ql/test/query-tests/security/CWE-611/XXE.expected
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@@ -77,6 +77,8 @@ edges
| XPathExpressionTests.java:27:37:27:57 | getInputStream(...) : InputStream | XPathExpressionTests.java:27:21:27:58 | new InputSource(...) |
nodes
| DocumentBuilderTests.java:14:19:14:39 | getInputStream(...) | semmle.label | getInputStream(...) |
| DocumentBuilderTests.java:28:19:28:39 | getInputStream(...) | semmle.label | getInputStream(...) |
| DocumentBuilderTests.java:35:19:35:39 | getInputStream(...) | semmle.label | getInputStream(...) |
| DocumentBuilderTests.java:42:19:42:39 | getInputStream(...) | semmle.label | getInputStream(...) |
| DocumentBuilderTests.java:49:19:49:39 | getInputStream(...) | semmle.label | getInputStream(...) |
| DocumentBuilderTests.java:64:19:64:39 | getInputStream(...) | semmle.label | getInputStream(...) |
@@ -250,6 +252,8 @@ nodes
subpaths
#select
| DocumentBuilderTests.java:14:19:14:39 | getInputStream(...) | DocumentBuilderTests.java:14:19:14:39 | getInputStream(...) | DocumentBuilderTests.java:14:19:14:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:14:19:14:39 | getInputStream(...) | user input |
| DocumentBuilderTests.java:28:19:28:39 | getInputStream(...) | DocumentBuilderTests.java:28:19:28:39 | getInputStream(...) | DocumentBuilderTests.java:28:19:28:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:28:19:28:39 | getInputStream(...) | user input |
| DocumentBuilderTests.java:35:19:35:39 | getInputStream(...) | DocumentBuilderTests.java:35:19:35:39 | getInputStream(...) | DocumentBuilderTests.java:35:19:35:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:35:19:35:39 | getInputStream(...) | user input |
| DocumentBuilderTests.java:42:19:42:39 | getInputStream(...) | DocumentBuilderTests.java:42:19:42:39 | getInputStream(...) | DocumentBuilderTests.java:42:19:42:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:42:19:42:39 | getInputStream(...) | user input |
| DocumentBuilderTests.java:49:19:49:39 | getInputStream(...) | DocumentBuilderTests.java:49:19:49:39 | getInputStream(...) | DocumentBuilderTests.java:49:19:49:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:49:19:49:39 | getInputStream(...) | user input |
| DocumentBuilderTests.java:64:19:64:39 | getInputStream(...) | DocumentBuilderTests.java:64:19:64:39 | getInputStream(...) | DocumentBuilderTests.java:64:19:64:39 | getInputStream(...) | Unsafe parsing of XML file from $@. | DocumentBuilderTests.java:64:19:64:39 | getInputStream(...) | user input |