CVE-2021-29921Critical· 9.8▾ MidnightIn Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 1.4 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
6.9%
In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.
python >= 3.8.0, < 3.8.12python >= 3.9.0, < 3.9.5communications_cloud_native_core_automated_test_suite = 1.8.0communications_cloud_native_core_binding_support_function = 1.11.0communications_cloud_native_core_network_slice_selection_function = 1.8.0graalvm = 20.3.2graalvm = 21.1.0zfs_storage_appliance_kit = 8.8Upgrade past the affected range:
python 3.9.5Connected by shared product, vendor, weakness, or advisory.
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