During fuzzing of Python standard libraries, the following code snippet causes an AttributeError with the following message: AttributeError: 'InvalidHeaderDefect' object has no attribute 'all_defects'. This occurs in the all_defects function at line 140 in email/_header_value_parser.py.
import email._header_value_parser
email._header_value_parser.get_address("!an??:=m==fr2@[C")
Traceback (most recent call last):
File "rep.py", line 3, in <module>
email._header_value_parser.get_address("!an??:=m==fr2@[C")
File "/usr/lib/python3.12/email/_header_value_parser.py", line 1988, in get_address
token, value = get_group(value)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 1954, in get_group
token, value = get_group_list(value)
^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 1926, in get_group_list
token, value = get_mailbox_list(value)
^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 1860, in get_mailbox_list
token, value = get_mailbox(value)
^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 1822, in get_mailbox
for x in token.all_defects):
^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in all_defects
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in <genexpr>
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in all_defects
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in <genexpr>
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in all_defects
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/email/_header_value_parser.py", line 140, in <genexpr>
return sum((x.all_defects for x in self), self.defects)
^^^^^^^^^^^^^
AttributeError: 'InvalidHeaderDefect' object has no attribute 'all_defects'
Bug report
Bug description:
During fuzzing of Python standard libraries, the following code snippet causes an
AttributeErrorwith the following message:AttributeError: 'InvalidHeaderDefect' object has no attribute 'all_defects'. This occurs in theall_defectsfunction at line 140 inemail/_header_value_parser.py.Exception Trace
CPython versions tested on:
3.12, 3.11, 3.10, 3.9
Operating systems tested on:
Linux
Linked PRs