CVE-2021-29921 (GCVE-0-2021-29921)
Vulnerability from cvelistv5
Published
2021-05-06 00:00
Modified
2025-11-03 21:44
Severity ?
CWE
  • n/a
Summary
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
cve@mitre.org https://bugs.python.org/issue36384 Issue Tracking, Patch, Vendor Advisory
cve@mitre.org https://docs.python.org/3/library/ipaddress.html Vendor Advisory
cve@mitre.org https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst Third Party Advisory
cve@mitre.org https://github.com/python/cpython/pull/12577 Patch, Third Party Advisory
cve@mitre.org https://github.com/python/cpython/pull/25099 Patch, Third Party Advisory
cve@mitre.org https://github.com/sickcodes Third Party Advisory
cve@mitre.org https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md Exploit, Third Party Advisory
cve@mitre.org https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html Vendor Advisory
cve@mitre.org https://security.gentoo.org/glsa/202305-02
cve@mitre.org https://security.netapp.com/advisory/ntap-20210622-0003/ Third Party Advisory
cve@mitre.org https://sick.codes/sick-2021-014 Exploit, Third Party Advisory
cve@mitre.org https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
cve@mitre.org https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
cve@mitre.org https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
cve@mitre.org https://www.oracle.com/security-alerts/cpujul2022.html
cve@mitre.org https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugs.python.org/issue36384 Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://docs.python.org/3/library/ipaddress.html Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/python/cpython/pull/12577 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/python/cpython/pull/25099 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/sickcodes Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md Exploit, Third Party Advisory
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 Vendor Advisory
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/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://sick.codes/sick-2021-014 Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
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 Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

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  }
}


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