Description
There is a MEDIUM severity vulnerability affecting CPython. Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Python Software Foundation / CPython0 – 3.8.20
- Python Software Foundation / CPython3.9.0 – 3.9.20
- Python Software Foundation / CPython3.10.0 – 3.10.15
- Python Software Foundation / CPython3.11.0 – 3.11.10
- Python Software Foundation / CPython3.12.0 – 3.12.6
- Python Software Foundation / CPython3.13.0a1 – 3.13.0rc2
References
- PATCHhttps://github.com/python/cpython/pull/121286
- MISChttps://github.com/python/cpython/issues/121285
- MISChttps://mail.python.org/archives/list/security-announce@python.org/thread/JRYFTPRHZRTLMZLWQEUHZSJXNHM4ACTY/
- PATCHhttps://github.com/python/cpython/commit/4eaf4891c12589e3c7bdad5f5b076e4c8392dd06
- PATCHhttps://github.com/python/cpython/commit/743acbe872485dc18df4d8ab2dc7895187f062c4
- PATCHhttps://github.com/python/cpython/commit/d449caf8a179e3b954268b3a88eb9170be3c8fbf
- PATCHhttps://github.com/python/cpython/commit/ed3a49ea734ada357ff4442996fd4ae71d253373
- PATCHhttps://github.com/python/cpython/commit/7d1f50cd92ff7e10a1c15a8f591dde8a6843a64d
- PATCHhttps://github.com/python/cpython/commit/b4225ca91547aa97ed3aca391614afbb255bc877
- PATCHhttps://github.com/python/cpython/commit/34ddb64d088dd7ccc321f6103d23153256caa5d4