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fix: sanitize subprocess call in gen_crt_bundle.py #10464

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fix: sanitize subprocess call in gen_crt_bundle.py #10464

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5 changes: 5 additions & 0 deletions wolfcrypt/src/port/Espressif/esp_crt_bundle/gen_crt_bundle.py
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Original file line number Diff line number Diff line change
Expand Up @@ -333,9 +333,14 @@ def main():

bundle = CertificateBundle()

_SHELL_META = re.compile(r'[;&|`$<>()\n\r]')
for path in args.input:
if _SHELL_META.search(path):
raise InputError('Unsafe characters in input path: %s' % path)
if os.path.isfile(path):
if os.path.basename(path) == 'cacrt_all.pem' and args.filter:
if _SHELL_META.search(args.filter):
raise InputError('Unsafe characters in filter path: %s' % args.filter)
bundle.add_with_filter(path, args.filter)
else:
bundle.add_from_file(path)
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