CVE-2021-29921

CRITICAL

9.8

Description

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie5/6/2021

Derniere modification11/3/2025

Sourcenvd

Observations honeypot0

Produits affectes

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

References

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)

Correlations IOC

Aucune correlation enregistree

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