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codeql/python/ql/src/Security/CWE-730/re_good.py at codeql-cli/v2.19.1 · github/codeql · GitHub
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codeql
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python
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ql
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src
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Security
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CWE-730
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re_good.py
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17 lines (13 loc) · 413 Bytes
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codeql
/
python
/
ql
/
src
/
Security
/
CWE-730
/
re_good.py
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from
flask
import
request
,
Flask
import
re
@
app
.
route
(
"/direct"
)
def
direct
():
unsafe_pattern
=
request
.
args
[
'pattern'
]
safe_pattern
=
re
.
escape
(
unsafe_pattern
)
re
.
search
(
safe_pattern
,
""
)
@
app
.
route
(
"/compile"
)
def
compile
():
unsafe_pattern
=
request
.
args
[
'pattern'
]
safe_pattern
=
re
.
escape
(
unsafe_pattern
)
compiled_pattern
=
re
.
compile
(
safe_pattern
)
compiled_pattern
.
search
(
""
)
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