Information disclosure in Python

1) Race condition

EUVDB-ID: #VU98567

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-3219

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Python: 3.5 - 3.12.4

CPE2.3

• cpe:2.3:a:python_org:python:3.5.10:*:*:*:*:*:*:*
• cpe:2.3:a:python_org:python:3.6.15:*:*:*:*:*:*:*
• cpe:2.3:a:python_org:python:3.7.17:*:*:*:*:*:*:*
• cpe:2.3:a:python_org:python:3.8.19:*:*:*:*:*:*:*
• cpe:2.3:a:python_org:python:3.9.19:*:*:*:*:*:*:*
• cpe:2.3:a:python_org:python:3.12.4:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.