PRIOn knowledge basePRION:CVE-2021-29921Improper access control
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.
References
bugs.python.org/issue36384
docs.python.org/3/library/ipaddress.html
github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst
github.com/python/cpython/pull/12577
github.com/python/cpython/pull/25099
github.com/sickcodes
github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md
python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html
security.gentoo.org/glsa/202305-02
security.netapp.com/advisory/ntap-20210622-0003/
sick.codes/sick-2021-014
www.oracle.com//security-alerts/cpujul2021.html
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujan2022.html
www.oracle.com/security-alerts/cpujul2022.html
www.oracle.com/security-alerts/cpuoct2021.html
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