Attacker-controlled CSV samples can trigger super-linear
regular-expression work during dialect sniffing and consume significant
CPU when applications pass unbounded input to csv.Sniffer.sniff().
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
python software foundation:cpython
References 9
https://github.com/python/cpython/issues/98820
cna@python.org
https://github.com/python/cpython/pull/153694
cna@python.org
https://mail.python.org/archives/list/security-announce@python.org/thread/KQ7NB…
cna@python.org
https://github.com/python/cpython/commit/063d4555c94ef412c731527dbf30193327f2ee…
cna@python.org
https://github.com/python/cpython/commit/476fb09cdb0d73e645849d98c610e7e5697ce7…
cna@python.org
https://github.com/python/cpython/commit/89f29c760c02774b099ddd6863268eb13fa394…
cna@python.org
https://github.com/python/cpython/commit/b30c7fa9edd921a118f286e9f90f560777fa69…
cna@python.org
https://github.com/python/cpython/commit/b09a67a20c464f8288c9f9a6b9c7082a745600…
NVD
https://github.com/python/cpython/commit/fd78b565d7c326f96ae903ab945b47f35d829c…
NVD