hohn/codeql
1
0
Fork 0
mirror of https://github.com/github/codeql.git synced 2026-01-30 14:52:57 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #327 from smowton/smowton/feature/more-post-update-nodes

Browse Source 
Add PostUpdateNodes for nested structs and arrays
This commit is contained in:
Chris Smowton
2020-09-11 12:47:20 +01:00
committed by GitHub
parent 903cffe7ed 650bc1d38f
commit 84def5f6c2
6 changed files with 119 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
ql/src/semmle/go/dataflow/internal/DataFlowUtil.qll
View File

@@ -416,6 +416,18 @@ class ReceiverNode extends ParameterNode {
predicate isReceiverOf(MethodDecl m) { parm.isReceiverOf(m) }
}
private Node getADirectlyWrittenNode() {
exists(Write w | w.writesField(result, _, _) or w.writesElement(result, _, _))
}
private DataFlow::Node getAccessPathPredecessor(DataFlow::Node node) {
result = node.(PointerDereferenceNode).getOperand()
or
result = node.(ComponentReadNode).getBase()
}
private Node getAWrittenNode() { result = getAccessPathPredecessor*(getADirectlyWrittenNode()) }
/**
* A node associated with an object after an operation that might have
* changed its state.
@@ -439,13 +451,7 @@ class PostUpdateNode extends Node {
or
preupd = any(PointerDereferenceNode deref).getOperand()
or
exists(Write w, DataFlow::Node base |
w.writesField(base, _, _) or w.writesElement(base, _, _)
|
preupd = base
or
preupd = base.(PointerDereferenceNode).getOperand()
)
preupd = getAWrittenNode()
or
preupd instanceof ArgumentNode and
mutableType(preupd.getType())

15
ql/test/library-tests/semmle/go/dataflow/PostUpdateNodes/test.expected Normal file
View File

@@ -0,0 +1,15 @@
| test.go:19:2:19:2 | definition of a |
| test.go:20:11:20:14 | &... |
| test.go:20:12:20:14 | selection of b |
| test.go:21:2:21:5 | selection of bs |
| test.go:21:2:21:8 | index expression |
| test.go:21:17:21:20 | &... |
| test.go:21:18:21:20 | struct literal |
| test.go:22:2:22:5 | selection of bs |
| test.go:22:2:22:8 | index expression |
| test.go:22:2:22:13 | implicit dereference |
| test.go:22:2:22:13 | selection of cptr |
| test.go:23:2:23:7 | implicit dereference |
| test.go:23:2:23:7 | selection of bptr |
| test.go:23:2:23:12 | implicit dereference |
| test.go:23:2:23:12 | selection of cptr |

25
ql/test/library-tests/semmle/go/dataflow/PostUpdateNodes/test.go Normal file
View File

@@ -0,0 +1,25 @@
package a
type C struct {
field int
}
type B struct {
cptr *C
}
type A struct {
b B
bptr *B
bs [5]B
}
func f() {
a := A{}
a.bptr = &a.b
a.bs[3].cptr = &C{}
a.bs[3].cptr.field = 100
a.bptr.cptr.field = 101
}

4
ql/test/library-tests/semmle/go/dataflow/PostUpdateNodes/test.ql Normal file
View File

@@ -0,0 +1,4 @@
import go
from DataFlow::PostUpdateNode pun
select pun

2
ql/test/library-tests/semmle/go/frameworks/Protobuf/TaintFlows.expected
View File

@@ -12,6 +12,7 @@
| testDeprecatedApi.go:143:20:143:39 | call to getUntrustedString : string | testDeprecatedApi.go:148:12:148:21 | serialized |
| testDeprecatedApi.go:152:25:152:43 | call to getUntrustedBytes : slice type | testDeprecatedApi.go:157:13:157:36 | index expression |
| testDeprecatedApi.go:161:25:161:43 | call to getUntrustedBytes : slice type | testDeprecatedApi.go:168:13:168:25 | index expression |
| testDeprecatedApi.go:176:24:176:43 | call to getUntrustedString : string | testDeprecatedApi.go:180:12:180:21 | serialized |
| testModernApi.go:11:22:11:41 | call to getUntrustedString : string | testModernApi.go:15:12:15:21 | serialized |
| testModernApi.go:20:22:20:41 | call to getUntrustedString : string | testModernApi.go:26:12:26:21 | serialized |
| testModernApi.go:30:25:30:43 | call to getUntrustedBytes : slice type | testModernApi.go:34:13:34:29 | selection of Description |
@@ -29,3 +30,4 @@
| testModernApi.go:200:20:200:39 | call to getUntrustedString : string | testModernApi.go:205:12:205:21 | serialized |
| testModernApi.go:209:25:209:43 | call to getUntrustedBytes : slice type | testModernApi.go:214:13:214:36 | index expression |
| testModernApi.go:218:25:218:43 | call to getUntrustedBytes : slice type | testModernApi.go:225:13:225:25 | index expression |
| testModernApi.go:233:24:233:43 | call to getUntrustedString : string | testModernApi.go:237:12:237:21 | serialized |

60
ql/test/query-tests/Security/CWE-601/OpenUrlRedirect/OpenUrlRedirect.expected
View File

@@ -6,6 +6,44 @@ edges
| stdlib.go:44:13:44:18 | selection of Form : Values | stdlib.go:46:23:46:28 | target |
| stdlib.go:64:13:64:18 | selection of Form : Values | stdlib.go:67:23:67:40 | ...+... |
| stdlib.go:89:13:89:18 | selection of Form : Values | stdlib.go:92:23:92:28 | target |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] | stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] | stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | stdlib.go:112:4:112:4 | r [pointer, URL] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | stdlib.go:112:4:112:4 | r [pointer, URL] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | stdlib.go:113:24:113:24 | r [pointer, URL] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | stdlib.go:113:24:113:24 | r [pointer, URL] |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | stdlib.go:112:4:112:8 | selection of URL [pointer] : URL |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | stdlib.go:112:4:112:8 | selection of URL [pointer] : URL |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | stdlib.go:107:54:107:54 | definition of r [pointer, URL] |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | stdlib.go:107:54:107:54 | definition of r [pointer, URL] |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] | stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] | stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:4 | r [pointer, URL] | stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:4 | r [pointer, URL] | stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | selection of URL [pointer] : URL |
| stdlib.go:112:4:112:8 | implicit dereference : URL | stdlib.go:112:4:112:8 | selection of URL [pointer] : URL |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | stdlib.go:112:4:112:8 | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | stdlib.go:112:4:112:8 | implicit dereference : URL |
| stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type | stdlib.go:113:24:113:28 | selection of URL : pointer type |
| stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type | stdlib.go:113:24:113:28 | selection of URL : pointer type |
| stdlib.go:113:24:113:24 | r [pointer, URL] | stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type |
| stdlib.go:113:24:113:24 | r [pointer, URL] | stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type |
| stdlib.go:113:24:113:28 | selection of URL : pointer type | stdlib.go:113:24:113:37 | call to String |
| stdlib.go:113:24:113:28 | selection of URL : pointer type | stdlib.go:113:24:113:37 | call to String |
| stdlib.go:146:13:146:18 | selection of Form : Values | stdlib.go:152:23:152:28 | target |
@@ -37,6 +75,28 @@ nodes
| stdlib.go:67:23:67:40 | ...+... | semmle.label | ...+... |
| stdlib.go:89:13:89:18 | selection of Form : Values | semmle.label | selection of Form : Values |
| stdlib.go:92:23:92:28 | target | semmle.label | target |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] | semmle.label | definition of r [pointer, URL, ... (3)] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL, ... (3)] | semmle.label | definition of r [pointer, URL, ... (3)] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | semmle.label | definition of r [pointer, URL] |
| stdlib.go:107:54:107:54 | definition of r [pointer, URL] | semmle.label | definition of r [pointer, URL] |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | semmle.label | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:4 | implicit dereference [URL, pointer] | semmle.label | implicit dereference [URL, pointer] |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | semmle.label | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:4 | implicit dereference [URL] : pointer type | semmle.label | implicit dereference [URL] : pointer type |
| stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] | semmle.label | r [pointer, URL, ... (3)] |
| stdlib.go:112:4:112:4 | r [pointer, URL, ... (3)] | semmle.label | r [pointer, URL, ... (3)] |
| stdlib.go:112:4:112:4 | r [pointer, URL] | semmle.label | r [pointer, URL] |
| stdlib.go:112:4:112:4 | r [pointer, URL] | semmle.label | r [pointer, URL] |
| stdlib.go:112:4:112:8 | implicit dereference : URL | semmle.label | implicit dereference : URL |
| stdlib.go:112:4:112:8 | implicit dereference : URL | semmle.label | implicit dereference : URL |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | semmle.label | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | selection of URL : pointer type | semmle.label | selection of URL : pointer type |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | semmle.label | selection of URL [pointer] : URL |
| stdlib.go:112:4:112:8 | selection of URL [pointer] : URL | semmle.label | selection of URL [pointer] : URL |
| stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type | semmle.label | implicit dereference [URL] : pointer type |
| stdlib.go:113:24:113:24 | implicit dereference [URL] : pointer type | semmle.label | implicit dereference [URL] : pointer type |
| stdlib.go:113:24:113:24 | r [pointer, URL] | semmle.label | r [pointer, URL] |
| stdlib.go:113:24:113:24 | r [pointer, URL] | semmle.label | r [pointer, URL] |
| stdlib.go:113:24:113:28 | selection of URL : pointer type | semmle.label | selection of URL : pointer type |
| stdlib.go:113:24:113:28 | selection of URL : pointer type | semmle.label | selection of URL : pointer type |
| stdlib.go:113:24:113:37 | call to String | semmle.label | call to String |