CVE-2024-4032

Incorrect IPv4 and IPv6 private ranges

Description

The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the is_private and is_global properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries. CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.53%
Vendor Advisory python.org
Affected: Python Software Foundation CPython
Published at:
Updated at:

References

Link Tags
https://github.com/python/cpython/issues/113171 issue tracking
https://github.com/python/cpython/pull/113179 patch
https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml
https://mail.python.org/archives/list/security-announce@python.org/thread/NRUHDUS2IV2USIZM2CVMSFL6SCKU3RZA/ vendor advisory
https://github.com/python/cpython/commit/22adf29da8d99933ffed8647d3e0726edd16f7f8 patch
https://github.com/python/cpython/commit/40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69f patch
https://github.com/python/cpython/commit/895f7e2ac23eff4743143beef0f0c5ac71ea27d3 patch
https://github.com/python/cpython/commit/ba431579efdcbaed7a96f2ac4ea0775879a332fb patch
https://github.com/python/cpython/commit/c62c9e518b784fe44432a3f4fc265fb95b651906 patch
https://github.com/python/cpython/commit/f86b17ac511e68192ba71f27e752321a3252cee3 patch
http://www.openwall.com/lists/oss-security/2024/06/17/3
https://security.netapp.com/advisory/ntap-20240726-0004/

Frequently Asked Questions

What is the severity of CVE-2024-4032?
CVE-2024-4032 has been scored as a high severity vulnerability.
How to fix CVE-2024-4032?
To fix CVE-2024-4032, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-4032 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-4032 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4032?
CVE-2024-4032 affects Python Software Foundation CPython.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.