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C++: Use a 'TaintTracking::Configuration' for 'cpp/uncontrolled-allocation-size'.

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This commit is contained in:
Mathias Vorreiter Pedersen
2022-03-09 12:08:38 +00:00
parent 2328898b19
commit 8a8fb692a3
2 changed files with 95 additions and 158 deletions
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122
cpp/ql/src/Security/CWE/CWE-190/TaintedAllocationSize.ql
View File

@@ -15,55 +15,89 @@
import cpp
import semmle.code.cpp.rangeanalysis.SimpleRangeAnalysis
import semmle.code.cpp.security.TaintTracking
import TaintedWithPath
import semmle.code.cpp.ir.dataflow.TaintTracking
import semmle.code.cpp.ir.IR
import semmle.code.cpp.controlflow.IRGuards
import semmle.code.cpp.security.FlowSources
import DataFlow::PathGraph
/**
* Holds if `alloc` is an allocation, and `tainted` is a child of it that is a
* taint sink.
*/
predicate allocSink(Expr alloc, Expr tainted) {
isAllocationExpr(alloc) and
tainted = alloc.getAChild() and
tainted.getUnspecifiedType() instanceof IntegralType
}
class TaintedAllocationSizeConfiguration extends TaintTrackingConfiguration {
override predicate isSink(Element tainted) { allocSink(_, tainted) }
override predicate isBarrier(Expr e) {
super.isBarrier(e)
or
// There can be two separate reasons for `convertedExprMightOverflow` not holding:
// 1. `e` really cannot overflow.
// 2. `e` isn't analyzable.
// If we didn't rule out case 2 we would place barriers on anything that isn't analyzable.
(
e instanceof UnaryArithmeticOperation or
e instanceof BinaryArithmeticOperation or
e instanceof AssignArithmeticOperation
) and
not convertedExprMightOverflow(e)
or
// Subtracting two pointers is either well-defined (and the result will likely be small), or
// terribly undefined and dangerous. Here, we assume that the programmer has ensured that the
// result is well-defined (i.e., the two pointers point to the same object), and thus the result
// will likely be small.
e = any(PointerDiffExpr diff).getAnOperand()
}
}
predicate taintedAllocSize(
Expr source, Expr alloc, PathNode sourceNode, PathNode sinkNode, string taintCause
) {
isUserInput(source, taintCause) and
exists(Expr tainted |
allocSink(alloc, tainted) and
taintedWithPath(source, tainted, sourceNode, sinkNode)
predicate allocSink(Expr alloc, DataFlow::Node sink) {
exists(Expr e | e = sink.asConvertedExpr() |
isAllocationExpr(alloc) and
e = alloc.getAChild() and
e.getUnspecifiedType() instanceof IntegralType
)
}
from Expr source, Expr alloc, PathNode sourceNode, PathNode sinkNode, string taintCause
where taintedAllocSize(source, alloc, sourceNode, sinkNode, taintCause)
select alloc, sourceNode, sinkNode, "This allocation size is derived from $@ and might overflow",
source, "user input (" + taintCause + ")"
predicate readsVariable(LoadInstruction load, Variable var) {
load.getSourceAddress().(VariableAddressInstruction).getASTVariable() = var
}
predicate hasUpperBoundsCheck(Variable var) {
exists(RelationalOperation oper, VariableAccess access |
oper.getAnOperand() = access and
access.getTarget() = var and
// Comparing to 0 is not an upper bound check
not oper.getAnOperand().getValue() = "0"
)
}
predicate nodeIsBarrierEqualityCandidate(DataFlow::Node node, Operand access, Variable checkedVar) {
readsVariable(node.asInstruction(), checkedVar) and
any(IRGuardCondition guard).ensuresEq(access, _, _, node.asInstruction().getBlock(), true)
}
predicate isFlowSource(FlowSource source, string sourceType) { sourceType = source.getSourceType() }
class TaintedAllocationSizeConfiguration extends TaintTracking::Configuration {
TaintedAllocationSizeConfiguration() { this = "TaintedAllocationSizeConfiguration" }
override predicate isSource(DataFlow::Node source) { isFlowSource(source, _) }
override predicate isSink(DataFlow::Node sink) { allocSink(_, sink) }
override predicate isSanitizer(DataFlow::Node node) {
exists(Expr e | e = node.asExpr() |
// There can be two separate reasons for `convertedExprMightOverflow` not holding:
// 1. `e` really cannot overflow.
// 2. `e` isn't analyzable.
// If we didn't rule out case 2 we would place barriers on anything that isn't analyzable.
(
e instanceof UnaryArithmeticOperation or
e instanceof BinaryArithmeticOperation or
e instanceof AssignArithmeticOperation
) and
not convertedExprMightOverflow(e)
or
// Subtracting two pointers is either well-defined (and the result will likely be small), or
// terribly undefined and dangerous. Here, we assume that the programmer has ensured that the
// result is well-defined (i.e., the two pointers point to the same object), and thus the result
// will likely be small.
e = any(PointerDiffExpr diff).getAnOperand()
)
or
exists(Variable checkedVar |
readsVariable(node.asInstruction(), checkedVar) and
hasUpperBoundsCheck(checkedVar)
)
or
exists(Variable checkedVar, Operand access |
readsVariable(access.getDef(), checkedVar) and
nodeIsBarrierEqualityCandidate(node, access, checkedVar)
)
}
}
from
Expr alloc, DataFlow::PathNode source, DataFlow::PathNode sink, string taintCause,
TaintedAllocationSizeConfiguration conf
where
isFlowSource(source.getNode(), taintCause) and
conf.hasFlowPath(source, sink) and
allocSink(alloc, sink.getNode())
select alloc, source, sink, "This allocation size is derived from $@ and might overflow",
source.getNode(), "user input (" + taintCause + ")"

131
cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/TaintedAllocationSize/TaintedAllocationSize.expected
View File

@@ -1,62 +1,20 @@
edges
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | (size_t)... |
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | (size_t)... |
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted |
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted |
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted |
| test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted |
| test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... |
| test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... |
| test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... |
| test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | (size_t)... |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | (size_t)... |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size |
| test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... |
| test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... |
| test.cpp:124:18:124:23 | call to getenv | test.cpp:128:24:128:41 | ... * ... |
| test.cpp:124:18:124:23 | call to getenv | test.cpp:128:24:128:41 | ... * ... |
| test.cpp:124:18:124:31 | (const char *)... | test.cpp:128:24:128:41 | ... * ... |
| test.cpp:124:18:124:31 | (const char *)... | test.cpp:128:24:128:41 | ... * ... |
| test.cpp:133:19:133:24 | call to getenv | test.cpp:135:10:135:27 | ... * ... |
| test.cpp:133:19:133:24 | call to getenv | test.cpp:135:10:135:27 | ... * ... |
| test.cpp:133:19:133:32 | (const char *)... | test.cpp:135:10:135:27 | ... * ... |
| test.cpp:133:19:133:32 | (const char *)... | test.cpp:135:10:135:27 | ... * ... |
| test.cpp:148:20:148:25 | call to getenv | test.cpp:152:11:152:28 | ... * ... |
| test.cpp:148:20:148:25 | call to getenv | test.cpp:152:11:152:28 | ... * ... |
| test.cpp:148:20:148:33 | (const char *)... | test.cpp:152:11:152:28 | ... * ... |
| test.cpp:148:20:148:33 | (const char *)... | test.cpp:152:11:152:28 | ... * ... |
| test.cpp:209:8:209:23 | ReturnValue | test.cpp:241:9:241:24 | call to get_tainted_size |
| test.cpp:209:8:209:23 | ReturnValue | test.cpp:241:9:241:24 | call to get_tainted_size |
| test.cpp:211:14:211:19 | call to getenv | test.cpp:209:8:209:23 | ReturnValue |
| test.cpp:211:14:211:27 | (const char *)... | test.cpp:209:8:209:23 | ReturnValue |
| test.cpp:224:23:224:23 | s | test.cpp:225:21:225:21 | s |
| test.cpp:224:23:224:23 | s | test.cpp:225:21:225:21 | s |
| test.cpp:230:21:230:21 | s | test.cpp:231:21:231:21 | s |
| test.cpp:230:21:230:21 | s | test.cpp:231:21:231:21 | s |
| test.cpp:237:24:237:29 | call to getenv | test.cpp:239:9:239:18 | (size_t)... |
| test.cpp:237:24:237:29 | call to getenv | test.cpp:239:9:239:18 | local_size |
| test.cpp:237:24:237:29 | call to getenv | test.cpp:239:9:239:18 | local_size |
| test.cpp:237:24:237:29 | call to getenv | test.cpp:245:11:245:20 | local_size |
| test.cpp:237:24:237:29 | call to getenv | test.cpp:247:10:247:19 | local_size |
| test.cpp:237:24:237:37 | (const char *)... | test.cpp:239:9:239:18 | (size_t)... |
| test.cpp:237:24:237:37 | (const char *)... | test.cpp:239:9:239:18 | local_size |
| test.cpp:237:24:237:37 | (const char *)... | test.cpp:239:9:239:18 | local_size |
| test.cpp:237:24:237:37 | (const char *)... | test.cpp:245:11:245:20 | local_size |
| test.cpp:237:24:237:37 | (const char *)... | test.cpp:247:10:247:19 | local_size |
| test.cpp:245:11:245:20 | local_size | test.cpp:224:23:224:23 | s |
| test.cpp:247:10:247:19 | local_size | test.cpp:230:21:230:21 | s |
| test.cpp:251:2:251:9 | (reference dereference) [post update] | test.cpp:289:17:289:20 | size [post update] |
@@ -64,112 +22,57 @@ edges
| test.cpp:251:18:251:23 | call to getenv | test.cpp:251:2:251:9 | (reference dereference) [post update] |
| test.cpp:251:18:251:23 | call to getenv | test.cpp:289:17:289:20 | size [post update] |
| test.cpp:251:18:251:23 | call to getenv | test.cpp:305:18:305:21 | size [post update] |
| test.cpp:251:18:251:31 | (const char *)... | test.cpp:251:2:251:9 | (reference dereference) [post update] |
| test.cpp:251:18:251:31 | (const char *)... | test.cpp:289:17:289:20 | size [post update] |
| test.cpp:251:18:251:31 | (const char *)... | test.cpp:305:18:305:21 | size [post update] |
| test.cpp:259:20:259:25 | call to getenv | test.cpp:263:11:263:29 | ... * ... |
| test.cpp:259:20:259:25 | call to getenv | test.cpp:263:11:263:29 | ... * ... |
| test.cpp:259:20:259:33 | (const char *)... | test.cpp:263:11:263:29 | ... * ... |
| test.cpp:259:20:259:33 | (const char *)... | test.cpp:263:11:263:29 | ... * ... |
| test.cpp:289:17:289:20 | size [post update] | test.cpp:291:11:291:28 | ... * ... |
| test.cpp:289:17:289:20 | size [post update] | test.cpp:291:11:291:28 | ... * ... |
| test.cpp:305:18:305:21 | size [post update] | test.cpp:308:10:308:27 | ... * ... |
| test.cpp:305:18:305:21 | size [post update] | test.cpp:308:10:308:27 | ... * ... |
subpaths
nodes
| test.cpp:40:21:40:24 | argv | semmle.label | argv |
| test.cpp:40:21:40:24 | argv | semmle.label | argv |
| test.cpp:43:38:43:44 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:43:38:43:44 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:43:38:43:44 | tainted | semmle.label | tainted |
| test.cpp:43:38:43:44 | tainted | semmle.label | tainted |
| test.cpp:43:38:43:44 | tainted | semmle.label | tainted |
| test.cpp:44:38:44:63 | ... * ... | semmle.label | ... * ... |
| test.cpp:44:38:44:63 | ... * ... | semmle.label | ... * ... |
| test.cpp:44:38:44:63 | ... * ... | semmle.label | ... * ... |
| test.cpp:46:38:46:63 | ... + ... | semmle.label | ... + ... |
| test.cpp:46:38:46:63 | ... + ... | semmle.label | ... + ... |
| test.cpp:46:38:46:63 | ... + ... | semmle.label | ... + ... |
| test.cpp:49:32:49:35 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:49:32:49:35 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:49:32:49:35 | size | semmle.label | size |
| test.cpp:49:32:49:35 | size | semmle.label | size |
| test.cpp:49:32:49:35 | size | semmle.label | size |
| test.cpp:50:26:50:29 | size | semmle.label | size |
| test.cpp:50:26:50:29 | size | semmle.label | size |
| test.cpp:50:26:50:29 | size | semmle.label | size |
| test.cpp:53:35:53:60 | ... * ... | semmle.label | ... * ... |
| test.cpp:53:35:53:60 | ... * ... | semmle.label | ... * ... |
| test.cpp:53:35:53:60 | ... * ... | semmle.label | ... * ... |
| test.cpp:124:18:124:23 | call to getenv | semmle.label | call to getenv |
| test.cpp:124:18:124:31 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:128:24:128:41 | ... * ... | semmle.label | ... * ... |
| test.cpp:128:24:128:41 | ... * ... | semmle.label | ... * ... |
| test.cpp:128:24:128:41 | ... * ... | semmle.label | ... * ... |
| test.cpp:133:19:133:24 | call to getenv | semmle.label | call to getenv |
| test.cpp:133:19:133:32 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:135:10:135:27 | ... * ... | semmle.label | ... * ... |
| test.cpp:135:10:135:27 | ... * ... | semmle.label | ... * ... |
| test.cpp:135:10:135:27 | ... * ... | semmle.label | ... * ... |
| test.cpp:148:20:148:25 | call to getenv | semmle.label | call to getenv |
| test.cpp:148:20:148:33 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:152:11:152:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:152:11:152:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:152:11:152:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:209:8:209:23 | ReturnValue | semmle.label | ReturnValue |
| test.cpp:211:14:211:19 | call to getenv | semmle.label | call to getenv |
| test.cpp:211:14:211:27 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:224:23:224:23 | s | semmle.label | s |
| test.cpp:225:21:225:21 | s | semmle.label | s |
| test.cpp:225:21:225:21 | s | semmle.label | s |
| test.cpp:225:21:225:21 | s | semmle.label | s |
| test.cpp:230:21:230:21 | s | semmle.label | s |
| test.cpp:231:21:231:21 | s | semmle.label | s |
| test.cpp:231:21:231:21 | s | semmle.label | s |
| test.cpp:231:21:231:21 | s | semmle.label | s |
| test.cpp:237:24:237:29 | call to getenv | semmle.label | call to getenv |
| test.cpp:237:24:237:37 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:239:9:239:18 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:239:9:239:18 | (size_t)... | semmle.label | (size_t)... |
| test.cpp:239:9:239:18 | local_size | semmle.label | local_size |
| test.cpp:239:9:239:18 | local_size | semmle.label | local_size |
| test.cpp:239:9:239:18 | local_size | semmle.label | local_size |
| test.cpp:241:9:241:24 | call to get_tainted_size | semmle.label | call to get_tainted_size |
| test.cpp:241:9:241:24 | call to get_tainted_size | semmle.label | call to get_tainted_size |
| test.cpp:241:9:241:24 | call to get_tainted_size | semmle.label | call to get_tainted_size |
| test.cpp:245:11:245:20 | local_size | semmle.label | local_size |
| test.cpp:247:10:247:19 | local_size | semmle.label | local_size |
| test.cpp:251:2:251:9 | (reference dereference) [post update] | semmle.label | (reference dereference) [post update] |
| test.cpp:251:2:251:9 | out_size [post update] | semmle.label | out_size [post update] |
| test.cpp:251:18:251:23 | call to getenv | semmle.label | call to getenv |
| test.cpp:251:18:251:31 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:259:20:259:25 | call to getenv | semmle.label | call to getenv |
| test.cpp:259:20:259:33 | (const char *)... | semmle.label | (const char *)... |
| test.cpp:263:11:263:29 | ... * ... | semmle.label | ... * ... |
| test.cpp:263:11:263:29 | ... * ... | semmle.label | ... * ... |
| test.cpp:263:11:263:29 | ... * ... | semmle.label | ... * ... |
| test.cpp:289:17:289:20 | size [post update] | semmle.label | size [post update] |
| test.cpp:291:11:291:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:291:11:291:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:291:11:291:28 | ... * ... | semmle.label | ... * ... |
| test.cpp:305:18:305:21 | size [post update] | semmle.label | size [post update] |
| test.cpp:308:10:308:27 | ... * ... | semmle.label | ... * ... |
| test.cpp:308:10:308:27 | ... * ... | semmle.label | ... * ... |
| test.cpp:308:10:308:27 | ... * ... | semmle.label | ... * ... |
subpaths
#select
| test.cpp:43:31:43:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:44:31:44:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:46:31:46:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:49:25:49:30 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:50:17:50:30 | new[] | test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:53:21:53:27 | call to realloc | test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (argv) |
| test.cpp:128:17:128:22 | call to malloc | test.cpp:124:18:124:23 | call to getenv | test.cpp:128:24:128:41 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:124:18:124:23 | call to getenv | user input (getenv) |
| test.cpp:135:3:135:8 | call to malloc | test.cpp:133:19:133:24 | call to getenv | test.cpp:135:10:135:27 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:133:19:133:24 | call to getenv | user input (getenv) |
| test.cpp:152:4:152:9 | call to malloc | test.cpp:148:20:148:25 | call to getenv | test.cpp:152:11:152:28 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:148:20:148:25 | call to getenv | user input (getenv) |
| test.cpp:225:14:225:19 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:225:21:225:21 | s | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (getenv) |
| test.cpp:231:14:231:19 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:231:21:231:21 | s | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (getenv) |
| test.cpp:239:2:239:7 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:239:9:239:18 | local_size | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (getenv) |
| test.cpp:241:2:241:7 | call to malloc | test.cpp:211:14:211:19 | call to getenv | test.cpp:241:9:241:24 | call to get_tainted_size | This allocation size is derived from $@ and might overflow | test.cpp:211:14:211:19 | call to getenv | user input (getenv) |
| test.cpp:263:4:263:9 | call to malloc | test.cpp:259:20:259:25 | call to getenv | test.cpp:263:11:263:29 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:259:20:259:25 | call to getenv | user input (getenv) |
| test.cpp:291:4:291:9 | call to malloc | test.cpp:251:18:251:23 | call to getenv | test.cpp:291:11:291:28 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:251:18:251:23 | call to getenv | user input (getenv) |
| test.cpp:308:3:308:8 | call to malloc | test.cpp:251:18:251:23 | call to getenv | test.cpp:308:10:308:27 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:251:18:251:23 | call to getenv | user input (getenv) |
| test.cpp:43:31:43:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:43:38:43:44 | tainted | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:44:31:44:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:44:38:44:63 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:46:31:46:36 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:46:38:46:63 | ... + ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:49:25:49:30 | call to malloc | test.cpp:40:21:40:24 | argv | test.cpp:49:32:49:35 | size | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:50:17:50:30 | new[] | test.cpp:40:21:40:24 | argv | test.cpp:50:26:50:29 | size | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:53:21:53:27 | call to realloc | test.cpp:40:21:40:24 | argv | test.cpp:53:35:53:60 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:40:21:40:24 | argv | user input (a command-line argument) |
| test.cpp:128:17:128:22 | call to malloc | test.cpp:124:18:124:23 | call to getenv | test.cpp:128:24:128:41 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:124:18:124:23 | call to getenv | user input (an environment variable) |
| test.cpp:135:3:135:8 | call to malloc | test.cpp:133:19:133:24 | call to getenv | test.cpp:135:10:135:27 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:133:19:133:24 | call to getenv | user input (an environment variable) |
| test.cpp:152:4:152:9 | call to malloc | test.cpp:148:20:148:25 | call to getenv | test.cpp:152:11:152:28 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:148:20:148:25 | call to getenv | user input (an environment variable) |
| test.cpp:225:14:225:19 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:225:21:225:21 | s | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (an environment variable) |
| test.cpp:231:14:231:19 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:231:21:231:21 | s | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (an environment variable) |
| test.cpp:239:2:239:7 | call to malloc | test.cpp:237:24:237:29 | call to getenv | test.cpp:239:9:239:18 | local_size | This allocation size is derived from $@ and might overflow | test.cpp:237:24:237:29 | call to getenv | user input (an environment variable) |
| test.cpp:241:2:241:7 | call to malloc | test.cpp:211:14:211:19 | call to getenv | test.cpp:241:9:241:24 | call to get_tainted_size | This allocation size is derived from $@ and might overflow | test.cpp:211:14:211:19 | call to getenv | user input (an environment variable) |
| test.cpp:263:4:263:9 | call to malloc | test.cpp:259:20:259:25 | call to getenv | test.cpp:263:11:263:29 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:259:20:259:25 | call to getenv | user input (an environment variable) |
| test.cpp:291:4:291:9 | call to malloc | test.cpp:251:18:251:23 | call to getenv | test.cpp:291:11:291:28 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:251:18:251:23 | call to getenv | user input (an environment variable) |
| test.cpp:308:3:308:8 | call to malloc | test.cpp:251:18:251:23 | call to getenv | test.cpp:308:10:308:27 | ... * ... | This allocation size is derived from $@ and might overflow | test.cpp:251:18:251:23 | call to getenv | user input (an environment variable) |