From 46e6e7259339beaed13fc46cd35c63fa9e39bf51 Mon Sep 17 00:00:00 2001 From: Jeroen Ketema Date: Wed, 15 Nov 2023 13:34:22 +0100 Subject: [PATCH] C++: Address review comments --- .../CWE-114/UncontrolledProcessOperation.ql | 16 +++++++++----- .../UncontrolledProcessOperation.expected | 2 +- .../UncontrolledProcessOperation.expected | 22 +++++++++---------- 3 files changed, 22 insertions(+), 18 deletions(-) diff --git a/cpp/ql/src/Security/CWE/CWE-114/UncontrolledProcessOperation.ql b/cpp/ql/src/Security/CWE/CWE-114/UncontrolledProcessOperation.ql index ff07189a66f..3e1c62b02c2 100644 --- a/cpp/ql/src/Security/CWE/CWE-114/UncontrolledProcessOperation.ql +++ b/cpp/ql/src/Security/CWE/CWE-114/UncontrolledProcessOperation.ql @@ -27,10 +27,13 @@ predicate isProcessOperationExplanation(DataFlow::Node arg, string processOperat ) } +predicate isSource(FlowSource source, string sourceType) { + not source instanceof DataFlow::ExprNode and + sourceType = source.getSourceType() +} + module Config implements DataFlow::ConfigSig { - predicate isSource(DataFlow::Node node) { - node instanceof FlowSource and not node instanceof DataFlow::ExprNode - } + predicate isSource(DataFlow::Node node) { isSource(node, _) } predicate isSink(DataFlow::Node node) { isProcessOperationExplanation(node, _) } @@ -44,13 +47,14 @@ module Config implements DataFlow::ConfigSig { module Flow = TaintTracking::Global; from - string processOperation, DataFlow::Node source, DataFlow::Node sink, Flow::PathNode sourceNode, - Flow::PathNode sinkNode + string processOperation, string sourceType, DataFlow::Node source, DataFlow::Node sink, + Flow::PathNode sourceNode, Flow::PathNode sinkNode where source = sourceNode.getNode() and sink = sinkNode.getNode() and + isSource(source, sourceType) and isProcessOperationExplanation(sink, processOperation) and Flow::flowPath(sourceNode, sinkNode) select sink, sourceNode, sinkNode, "The value of this argument may come from $@ and is being passed to " + processOperation + ".", - source, source.toString() + source, sourceType diff --git a/cpp/ql/test/query-tests/Security/CWE/CWE-114/SAMATE/UncontrolledProcessOperation/UncontrolledProcessOperation.expected b/cpp/ql/test/query-tests/Security/CWE/CWE-114/SAMATE/UncontrolledProcessOperation/UncontrolledProcessOperation.expected index 27e991f6174..35161adb8f8 100644 --- a/cpp/ql/test/query-tests/Security/CWE/CWE-114/SAMATE/UncontrolledProcessOperation/UncontrolledProcessOperation.expected +++ b/cpp/ql/test/query-tests/Security/CWE/CWE-114/SAMATE/UncontrolledProcessOperation/UncontrolledProcessOperation.expected @@ -9,4 +9,4 @@ nodes | test.cpp:73:24:73:27 | data indirection | semmle.label | data indirection | subpaths #select -| test.cpp:43:32:43:35 | data indirection | test.cpp:64:30:64:35 | call to getenv indirection | test.cpp:43:32:43:35 | data indirection | The value of this argument may come from $@ and is being passed to LoadLibraryA. | test.cpp:64:30:64:35 | call to getenv indirection | call to getenv indirection | +| test.cpp:43:32:43:35 | data indirection | test.cpp:64:30:64:35 | call to getenv indirection | test.cpp:43:32:43:35 | data indirection | The value of this argument may come from $@ and is being passed to LoadLibraryA. | test.cpp:64:30:64:35 | call to getenv indirection | an environment variable | diff --git a/cpp/ql/test/query-tests/Security/CWE/CWE-114/semmle/UncontrolledProcessOperation/UncontrolledProcessOperation.expected b/cpp/ql/test/query-tests/Security/CWE/CWE-114/semmle/UncontrolledProcessOperation/UncontrolledProcessOperation.expected index b9f97d92713..b30de4bceba 100644 --- a/cpp/ql/test/query-tests/Security/CWE/CWE-114/semmle/UncontrolledProcessOperation/UncontrolledProcessOperation.expected +++ b/cpp/ql/test/query-tests/Security/CWE/CWE-114/semmle/UncontrolledProcessOperation/UncontrolledProcessOperation.expected @@ -35,14 +35,14 @@ nodes | test.cpp:114:9:114:11 | ptr indirection | semmle.label | ptr indirection | subpaths #select -| test.cpp:26:10:26:16 | command indirection | test.cpp:42:18:42:34 | call to getenv indirection | test.cpp:26:10:26:16 | command indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:42:18:42:34 | call to getenv indirection | call to getenv indirection | -| test.cpp:31:10:31:16 | command indirection | test.cpp:43:18:43:34 | call to getenv indirection | test.cpp:31:10:31:16 | command indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:43:18:43:34 | call to getenv indirection | call to getenv indirection | -| test.cpp:62:10:62:15 | buffer indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:62:10:62:15 | buffer indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | fgets output argument | -| test.cpp:63:10:63:13 | data indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:63:10:63:13 | data indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | fgets output argument | -| test.cpp:64:10:64:16 | (reference dereference) indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:64:10:64:16 | (reference dereference) indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | fgets output argument | -| test.cpp:64:10:64:16 | dataref indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:64:10:64:16 | dataref indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | fgets output argument | -| test.cpp:65:10:65:14 | data2 indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:65:10:65:14 | data2 indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | fgets output argument | -| test.cpp:78:10:78:15 | buffer indirection | test.cpp:76:12:76:17 | fgets output argument | test.cpp:78:10:78:15 | buffer indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:76:12:76:17 | fgets output argument | fgets output argument | -| test.cpp:99:15:99:20 | buffer indirection | test.cpp:98:17:98:22 | recv output argument | test.cpp:99:15:99:20 | buffer indirection | The value of this argument may come from $@ and is being passed to LoadLibrary. | test.cpp:98:17:98:22 | recv output argument | recv output argument | -| test.cpp:107:15:107:20 | buffer indirection | test.cpp:106:17:106:22 | recv output argument | test.cpp:107:15:107:20 | buffer indirection | The value of this argument may come from $@ and is being passed to LoadLibrary. | test.cpp:106:17:106:22 | recv output argument | recv output argument | -| test.cpp:114:9:114:11 | ptr indirection | test.cpp:113:8:113:12 | call to fgets indirection | test.cpp:114:9:114:11 | ptr indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:113:8:113:12 | call to fgets indirection | call to fgets indirection | +| test.cpp:26:10:26:16 | command indirection | test.cpp:42:18:42:34 | call to getenv indirection | test.cpp:26:10:26:16 | command indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:42:18:42:34 | call to getenv indirection | an environment variable | +| test.cpp:31:10:31:16 | command indirection | test.cpp:43:18:43:34 | call to getenv indirection | test.cpp:31:10:31:16 | command indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:43:18:43:34 | call to getenv indirection | an environment variable | +| test.cpp:62:10:62:15 | buffer indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:62:10:62:15 | buffer indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | string read by fgets | +| test.cpp:63:10:63:13 | data indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:63:10:63:13 | data indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | string read by fgets | +| test.cpp:64:10:64:16 | (reference dereference) indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:64:10:64:16 | (reference dereference) indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | string read by fgets | +| test.cpp:64:10:64:16 | dataref indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:64:10:64:16 | dataref indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | string read by fgets | +| test.cpp:65:10:65:14 | data2 indirection | test.cpp:56:12:56:17 | fgets output argument | test.cpp:65:10:65:14 | data2 indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:56:12:56:17 | fgets output argument | string read by fgets | +| test.cpp:78:10:78:15 | buffer indirection | test.cpp:76:12:76:17 | fgets output argument | test.cpp:78:10:78:15 | buffer indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:76:12:76:17 | fgets output argument | string read by fgets | +| test.cpp:99:15:99:20 | buffer indirection | test.cpp:98:17:98:22 | recv output argument | test.cpp:99:15:99:20 | buffer indirection | The value of this argument may come from $@ and is being passed to LoadLibrary. | test.cpp:98:17:98:22 | recv output argument | buffer read by recv | +| test.cpp:107:15:107:20 | buffer indirection | test.cpp:106:17:106:22 | recv output argument | test.cpp:107:15:107:20 | buffer indirection | The value of this argument may come from $@ and is being passed to LoadLibrary. | test.cpp:106:17:106:22 | recv output argument | buffer read by recv | +| test.cpp:114:9:114:11 | ptr indirection | test.cpp:113:8:113:12 | call to fgets indirection | test.cpp:114:9:114:11 | ptr indirection | The value of this argument may come from $@ and is being passed to system. | test.cpp:113:8:113:12 | call to fgets indirection | string read by fgets |