critical9.8
CVE-2021-29921
In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Python | from 3.8.0 before 3.8.12 from 3.9.0 before 3.9.5 |
| Oracle | Communications Cloud Native Core Automated Test Suite | Version 1.8.0 |
| Oracle | Communications Cloud Native Core Binding Support Function | Version 1.11.0 |
| Oracle | Communications Cloud Native Core Network Slice Selection Function | Version 1.8.0 |
| Oracle | Graalvm | Versions 20.3.2, 21.1.0 |
| Oracle | Zfs Storage Appliance Kit | Version 8.8 |
References
- NVD record
- CVE.org record
- 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://lists.debian.org/debian-lts-announce/2024/12/msg00000.html