CVE-2021-29921

CRITICAL

9.8

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.19.8

SeveridadCRITICAL

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado5/6/2021

Ultima modificacion11/3/2025

Fuentenvd

Avistamientos honeypot0

Productos afectados

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)

Correlaciones IOC

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