CVE-2021-29921
In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situat
CVSS
9.8
Crítica
EPSS
6.8%
p94
KEV
—
Exploit Today
28
0-100
Publicado: 6 de mai. de 2021 · Última mod.: 8 de out. de 2026
6.8%EPSS · 30 dias6.9%
2026-10-172026-11-13
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.
- bugs.python.orghttps://bugs.python.org/issue36384
- docs.python.orghttps://docs.python.org/3/library/ipaddress.html
- github.comhttps://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst
- github.comhttps://github.com/python/cpython/pull/12577
- github.comhttps://github.com/python/cpython/pull/25099
- github.comhttps://github.com/sickcodes
- github.comhttps://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md
- python-security.readthedocs.iohttps://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html
- security.gentoo.orghttps://security.gentoo.org/glsa/202305-02
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210622-0003/
- sick.codeshttps://sick.codes/sick-2021-014
- www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.html
- bugs.python.orghttps://bugs.python.org/issue36384
- docs.python.orghttps://docs.python.org/3/library/ipaddress.html
- github.comhttps://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst
- github.comhttps://github.com/python/cpython/pull/12577
Nenhum CVE relacionado por CWE ou produto.