Vulnerability Details 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 situations) allows attackers to bypass access control that is based on IP addresses.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.018
EPSS Ranking 82.0%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- https://bugs.python.org/issue36384
- https://docs.python.org/3/library/ipaddress.html
- https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst
- https://github.com/python/cpython/pull/12577
- https://github.com/python/cpython/pull/25099
- https://github.com/sickcodes
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md
- https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html
- https://security.gentoo.org/glsa/202305-02
- https://security.netapp.com/advisory/ntap-20210622-0003/
- https://sick.codes/sick-2021-014
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://bugs.python.org/issue36384
- https://docs.python.org/3/library/ipaddress.html
- https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Misc/NEWS.d/3.8.0a4.rst
- https://github.com/python/cpython/pull/12577
- https://github.com/python/cpython/pull/25099
- https://github.com/sickcodes
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-014.md
- https://python-security.readthedocs.io/vuln/ipaddress-ipv4-leading-zeros.html
- https://security.gentoo.org/glsa/202305-02
- https://security.netapp.com/advisory/ntap-20210622-0003/
- https://sick.codes/sick-2021-014
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
Products affected by CVE-2021-29921
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cpe:2.3:a:oracle:communications_cloud_native_core_automated_test_suite:1.8.0
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cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0
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cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0
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cpe:2.3:a:oracle:graalvm:20.3.2
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cpe:2.3:a:oracle:graalvm:21.1.0
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cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8
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cpe:2.3:a:python:python:3.8.0
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cpe:2.3:a:python:python:3.8.0b1
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cpe:2.3:a:python:python:3.8.1
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cpe:2.3:a:python:python:3.8.10
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cpe:2.3:a:python:python:3.8.11
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cpe:2.3:a:python:python:3.8.2
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cpe:2.3:a:python:python:3.8.3
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cpe:2.3:a:python:python:3.8.4
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cpe:2.3:a:python:python:3.8.5
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cpe:2.3:a:python:python:3.8.6
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cpe:2.3:a:python:python:3.8.7
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cpe:2.3:a:python:python:3.8.8
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cpe:2.3:a:python:python:3.8.9
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cpe:2.3:a:python:python:3.9.0
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cpe:2.3:a:python:python:3.9.1
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cpe:2.3:a:python:python:3.9.2
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cpe:2.3:a:python:python:3.9.3
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cpe:2.3:a:python:python:3.9.4