Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.
https://github.com/python/cpython/pull/20956
https://bugs.python.org/issue41004
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00006.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00032.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00041.html
https://security.netapp.com/advisory/ntap-20200724-0004/
https://usn.ubuntu.com/4428-1/
https://security.gentoo.org/glsa/202008-01
https://www.oracle.com/security-alerts/cpujan2021.html
https://lists.debian.org/debian-lts-announce/2023/05/msg00016.html
Source: MITRE
Published: 2020-06-18
Updated: 2023-05-16
Type: CWE-682
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 5.9
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.2
Severity: MEDIUM