BIT-libpython-2021-29921
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/libpython/BIT-libpython-2021-29921.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-libpython-2021-29921
- Aliases
- Published
- 2025-08-11T13:51:46.493Z
- Modified
- 2025-08-11T15:13:32.306678Z
- Summary
- [none]
- Details
-
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.
- Database specific
{ "severity": "Critical", "cpes": [ "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*" ] }- 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://nvd.nist.gov/vuln/detail/CVE-2021-29921
- 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
Affected packages
Bitnami / libpython
Package
- Name
- libpython
- Purl
- pkg:bitnami/libpython
Severity
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator