The “socket” module provides a pure-Python fallback to the socket.socketpair() function for platforms that don’t support AF_UNIX, such as Windows. This pure-Python implementation uses AF_INET or AF_INET6 to create a local connected pair of sockets. The connection between the two sockets was not verified before passing the two sockets back to the user, which leaves the server socket vulnerable to a connection race from a malicious local peer. Platforms that support AF_UNIX such as Linux and macOS are not affected by this vulnerability. Versions prior to CPython 3.5 are not affected due to the vulnerable API not being included.
https://mail.python.org/archives/list/[email protected]/thread/WYKDQWIERRE2ICIYMSVRZJO33GSCWU2B/
https://github.com/python/cpython/pull/122134
https://github.com/python/cpython/issues/122133
https://github.com/python/cpython/commit/f071f01b7b7e19d7d6b3a4b0ec62f820ecb14660
https://github.com/python/cpython/commit/e319f774f9e766a2b92949444a2d46081df3363a
https://github.com/python/cpython/commit/c5655aa6ad120d2ed7f255bebd6e8b71a9c07dde
https://github.com/python/cpython/commit/c21a36112a0028d7ac3cf8f480e0dc88dba5922c
https://github.com/python/cpython/commit/b252317956b7fc035bb3774ef6a177e227f9fc54
https://github.com/python/cpython/commit/5f90abaa786f994db3907fc31e2ee00ea2cf0929
https://github.com/python/cpython/commit/5df322e91a40909e6904bbdbc0c3a6b6a9eead39
https://github.com/python/cpython/commit/3f5d9d12c74787fbf3f5891835c85cc15526c86d
https://github.com/python/cpython/commit/31302f5fc24eecd693f0c8aaba7c2840b09b594d
https://github.com/python/cpython/commit/2621a8a40ba4b2c68ca564671b7daa5da80a4508
https://github.com/python/cpython/commit/220e31adeaaa8436c9ff234cba1398bc49e2bb6c
https://github.com/python/cpython/commit/0b65c8bf5367625673eafb92f85046a1b31259f2
https://github.com/python/cpython/commit/06fa244666ec6335a3b9bf2367e31b42b9a89b20
Published: 2024-07-29
Updated: 2024-11-04
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N
Severity: Low
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High
Base Score: 5.1
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Severity: Medium