// For flags

CVE-2024-3219

Pure-Python fallback of socket.socketpair() doesn’t authenticate peer connection

Severity Score

5.1
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

*Credits: Ellie
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
Low
None
Integrity
None
None
Availability
None
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-04-02 CVE Reserved
  • 2024-07-29 CVE Published
  • 2025-01-31 CVE Updated
  • 2025-04-03 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-306: Missing Authentication for Critical Function
CAPEC
References (18)
URL Tag Source
https://github.com/python/cpython/issues/122133 Issue Tracking
http://www.openwall.com/lists/oss-security/2024/07/29/3
URL Date SRC
URL Date SRC
https://github.com/python/cpython/pull/122134 2025-01-31
https://github.com/python/cpython/commit/06fa244666ec6335a3b9bf2367e31b42b9a89b20 2025-01-31
https://github.com/python/cpython/commit/0b65c8bf5367625673eafb92f85046a1b31259f2 2025-01-31
https://github.com/python/cpython/commit/220e31adeaaa8436c9ff234cba1398bc49e2bb6c 2025-01-31
https://github.com/python/cpython/commit/5f90abaa786f994db3907fc31e2ee00ea2cf0929 2025-01-31
https://github.com/python/cpython/commit/b252317956b7fc035bb3774ef6a177e227f9fc54 2025-01-31
https://github.com/python/cpython/commit/2621a8a40ba4b2c68ca564671b7daa5da80a4508 2025-01-31
https://github.com/python/cpython/commit/5df322e91a40909e6904bbdbc0c3a6b6a9eead39 2025-01-31
https://github.com/python/cpython/commit/c21a36112a0028d7ac3cf8f480e0dc88dba5922c 2025-01-31
https://github.com/python/cpython/commit/f071f01b7b7e19d7d6b3a4b0ec62f820ecb14660 2025-01-31
https://github.com/python/cpython/commit/31302f5fc24eecd693f0c8aaba7c2840b09b594d 2025-01-31
https://github.com/python/cpython/commit/3f5d9d12c74787fbf3f5891835c85cc15526c86d 2025-01-31
https://github.com/python/cpython/commit/c5655aa6ad120d2ed7f255bebd6e8b71a9c07dde 2025-01-31
https://github.com/python/cpython/commit/e319f774f9e766a2b92949444a2d46081df3363a 2025-01-31
https://github.com/python/cpython/commit/78df1043dbdce5c989600616f9f87b4ee72944e5 2025-01-31
URL Date SRC
https://mail.python.org/archives/list/security-announce@python.org/thread/WYKDQWIERRE2ICIYMSVRZJO33GSCWU2B 2025-01-31
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 < 3.8.20
Search vendor "Python Software Foundation" for product "CPython" and version " < 3.8.20"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.9.0 < 3.9.20
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.9.0 < 3.9.20"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.10.0 < 3.10.15
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.10.0 < 3.10.15"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.11.0 < 3.11.10
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.11.0 < 3.11.10"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.12.0 < 3.12.5
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.12.0 < 3.12.5"
en
Affected