When decompressing crafted zip files using the bzip/LZMA/Zstandard
compressions, Python could use an attacker-controlled size to
pre-allocate memory, possibly resulting in memory exhaustion.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Active
User action required
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 7
https://github.com/python/cpython/issues/156002
cna@python.org
https://github.com/python/cpython/pull/156003
cna@python.org
https://mail.python.org/archives/list/security-announce@python.org/thread/YUHXU…
cna@python.org
https://github.com/python/cpython/commit/f897dbf2f36a5935700b7c2d94d4681d2136b7…
cna@python.org
https://github.com/python/cpython/commit/1b424c0178a01e155fd0267dc28a8fc1159b33…
cna@python.org
https://github.com/python/cpython/commit/31980e84b9a708424a0a1dfecde3fc991e313f…
NVD
https://github.com/python/cpython/commit/e2311cfb3dd518f008f312fe0631f4f7490d23…
cna@python.org