SB2024101561 - Information disclosure in Python

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2024-3219)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a race condition within the socket module, which 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.

Remediation

Install update from vendor's website.

References

• https://github.com/python/cpython/pull/122134
• https://github.com/python/cpython/issues/122133
• https://mail.python.org/archives/list/security-announce@python.org/thread/WYKDQWIERRE2ICIYMSVRZJO33GSCWU2B/
• http://www.openwall.com/lists/oss-security/2024/07/29/3
• https://github.com/python/cpython/commit/06fa244666ec6335a3b9bf2367e31b42b9a89b20
• https://github.com/python/cpython/commit/0b65c8bf5367625673eafb92f85046a1b31259f2
• https://github.com/python/cpython/commit/220e31adeaaa8436c9ff234cba1398bc49e2bb6c
• https://github.com/python/cpython/commit/5f90abaa786f994db3907fc31e2ee00ea2cf0929
• https://github.com/python/cpython/commit/b252317956b7fc035bb3774ef6a177e227f9fc54
• https://github.com/python/cpython/commit/2621a8a40ba4b2c68ca564671b7daa5da80a4508
• https://github.com/python/cpython/commit/5df322e91a40909e6904bbdbc0c3a6b6a9eead39
• https://github.com/python/cpython/commit/c21a36112a0028d7ac3cf8f480e0dc88dba5922c
• https://github.com/python/cpython/commit/f071f01b7b7e19d7d6b3a4b0ec62f820ecb14660
• https://github.com/python/cpython/commit/31302f5fc24eecd693f0c8aaba7c2840b09b594d
• https://github.com/python/cpython/commit/3f5d9d12c74787fbf3f5891835c85cc15526c86d
• https://github.com/python/cpython/commit/c5655aa6ad120d2ed7f255bebd6e8b71a9c07dde
• https://github.com/python/cpython/commit/e319f774f9e766a2b92949444a2d46081df3363a