hohn/codeql
1
0
Fork 0
mirror of https://github.com/github/codeql.git synced 2025-12-16 16:53:25 +01:00
Code Issues Packages Projects Releases Wiki Activity

[DIFF-INFORMED] Python: (Possible)TimingAttackAgainstHash

Browse Source
This commit is contained in:
Nora Dimitrijević
2025-07-16 16:24:38 +02:00
parent 9408a96ba5
commit 20030d56a5
3 changed files with 9 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
python/ql/src/experimental/Security/CWE-208/TimingAttackAgainstHash/PossibleTimingAttackAgainstHash.ql
View File

@@ -26,6 +26,8 @@ private module PossibleTimingAttackAgainstHashConfig implements DataFlow::Config
predicate isSource(DataFlow::Node source) { source instanceof ProduceCryptoCall }
predicate isSink(DataFlow::Node sink) { sink instanceof NonConstantTimeComparisonSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module PossibleTimingAttackAgainstHashFlow =
@@ -38,4 +40,4 @@ from
PossibleTimingAttackAgainstHashFlow::PathNode sink
where PossibleTimingAttackAgainstHashFlow::flowPath(source, sink)
select sink.getNode(), source, sink, "Possible Timing attack against $@ validation.",
source.getNode().(ProduceCryptoCall).getResultType(), "message"
source.getNode(), source.getNode().(ProduceCryptoCall).getResultType() + " message"

6
python/ql/src/experimental/Security/CWE-208/TimingAttackAgainstHash/TimingAttackAgainstHash.ql
View File

@@ -25,6 +25,8 @@ private module TimingAttackAgainstHashConfig implements DataFlow::ConfigSig {
predicate isSource(DataFlow::Node source) { source instanceof ProduceCryptoCall }
predicate isSink(DataFlow::Node sink) { sink instanceof NonConstantTimeComparisonSink }
predicate observeDiffInformedIncrementalMode() { any() }
}
module TimingAttackAgainstHashFlow = TaintTracking::Global<TimingAttackAgainstHashConfig>;
@@ -35,5 +37,5 @@ from TimingAttackAgainstHashFlow::PathNode source, TimingAttackAgainstHashFlow::
where
TimingAttackAgainstHashFlow::flowPath(source, sink) and
sink.getNode().(NonConstantTimeComparisonSink).includesUserInput()
select sink.getNode(), source, sink, "Timing attack against $@ validation.",
source.getNode().(ProduceCryptoCall).getResultType(), "message"
select sink.getNode(), source, sink, "Timing attack against $@ validation.", source.getNode(),
source.getNode().(ProduceCryptoCall).getResultType() + " message"

4
python/ql/test/experimental/query-tests/Security/CWE-208/TimingAttackAgainstHash/PossibleTimingAttackAgainstHash.expected
View File

@@ -10,5 +10,5 @@ nodes
| TimingAttackAgainstHash.py:37:19:37:48 | ControlFlowNode for sign() | semmle.label | ControlFlowNode for sign() |
subpaths
#select
| TimingAttackAgainstHash.py:27:24:27:32 | ControlFlowNode for signature | TimingAttackAgainstHash.py:26:17:26:41 | ControlFlowNode for Attribute() | TimingAttackAgainstHash.py:27:24:27:32 | ControlFlowNode for signature | Possible Timing attack against $@ validation. | signature | message |
| TimingAttackAgainstHash.py:37:19:37:48 | ControlFlowNode for sign() | TimingAttackAgainstHash.py:30:12:30:47 | ControlFlowNode for Attribute() | TimingAttackAgainstHash.py:37:19:37:48 | ControlFlowNode for sign() | Possible Timing attack against $@ validation. | MAC | message |
| TimingAttackAgainstHash.py:27:24:27:32 | ControlFlowNode for signature | TimingAttackAgainstHash.py:26:17:26:41 | ControlFlowNode for Attribute() | TimingAttackAgainstHash.py:27:24:27:32 | ControlFlowNode for signature | Possible Timing attack against $@ validation. | TimingAttackAgainstHash.py:26:17:26:41 | ControlFlowNode for Attribute() | signature message |
| TimingAttackAgainstHash.py:37:19:37:48 | ControlFlowNode for sign() | TimingAttackAgainstHash.py:30:12:30:47 | ControlFlowNode for Attribute() | TimingAttackAgainstHash.py:37:19:37:48 | ControlFlowNode for sign() | Possible Timing attack against $@ validation. | TimingAttackAgainstHash.py:30:12:30:47 | ControlFlowNode for Attribute() | MAC message |