CVE-2021-29921

CRITICAL

9.8

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.19.8

SeveridadeCRITICAL

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado5/6/2021

Ultima modificacao11/3/2025

Fontenvd

Avistamentos honeypot0

Produtos afetados

oracle:communications_cloud_native_core_automated_test_suiteoracle:communications_cloud_native_core_binding_support_functionoracle:communications_cloud_native_core_network_slice_selection_functionoracle:graalvmoracle:zfs_storage_appliance_kitpython:python

Referencias

https://bugs.python.org/issue36384(cve@mitre.org)

https://docs.python.org/3/library/ipaddress.html(cve@mitre.org)

https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst(cve@mitre.org)

https://github.com/python/cpython/pull/12577(cve@mitre.org)

https://github.com/python/cpython/pull/25099(cve@mitre.org)

https://github.com/sickcodes(cve@mitre.org)

https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md(cve@mitre.org)

https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html(cve@mitre.org)

https://security.gentoo.org/glsa/202305-02(cve@mitre.org)

https://security.netapp.com/advisory/ntap-20210622-0003/(cve@mitre.org)

https://sick.codes/sick-2021-014(cve@mitre.org)

https://www.oracle.com//security-alerts/cpujul2021.html(cve@mitre.org)

https://www.oracle.com/security-alerts/cpuapr2022.html(cve@mitre.org)

https://www.oracle.com/security-alerts/cpujan2022.html(cve@mitre.org)

https://www.oracle.com/security-alerts/cpujul2022.html(cve@mitre.org)

https://www.oracle.com/security-alerts/cpuoct2021.html(cve@mitre.org)

https://bugs.python.org/issue36384(af854a3a-2127-422b-91ae-364da2661108)

https://docs.python.org/3/library/ipaddress.html(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/python/cpython/pull/12577(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/python/cpython/pull/25099(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/sickcodes(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html(af854a3a-2127-422b-91ae-364da2661108)

https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/202305-02(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20210622-0003/(af854a3a-2127-422b-91ae-364da2661108)

https://sick.codes/sick-2021-014(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com//security-alerts/cpujul2021.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpuapr2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujan2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpujul2022.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpuoct2021.html(af854a3a-2127-422b-91ae-364da2661108)

Correlacoes IOC

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