Incorrect IPv4 and IPv6 private ranges
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.1%
exploitation probability
1.1%top 38% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Python Software Foundation · CPythonReferences
https://github.com/python/cpython/commit/22adf29da8d99933ffed8647d3e0726edd16f7f8https://github.com/python/cpython/commit/40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69fhttps://github.com/python/cpython/commit/895f7e2ac23eff4743143beef0f0c5ac71ea27d3https://github.com/python/cpython/commit/ba431579efdcbaed7a96f2ac4ea0775879a332fbhttps://github.com/python/cpython/commit/c62c9e518b784fe44432a3f4fc265fb95b651906https://github.com/python/cpython/commit/f86b17ac511e68192ba71f27e752321a3252cee3https://github.com/python/cpython/issues/113171https://github.com/python/cpython/pull/113179https://lists.debian.org/debian-lts-announce/2024/12/msg00000.htmlhttps://mail.python.org/archives/list/security-announce@python.org/thread/NRUHDUS2IV2USIZM2CVMSFL6SCKU3RZA/https://security.netapp.com/advisory/ntap-20240726-0004/https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml