CVE-2020-14422

MEDIUM

Description

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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00003.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00032.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00041.html

https://bugs.python.org/issue41004

https://github.com/python/cpython/pull/20956

https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/36XI3EEQNMHGOZEI63Y7UV6XZRELYEAU/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CNHPQGSP2YM3JAUD2VAMPXTIUQTZ2M2U/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CTUNTBJ3POHONQOTLEZC46POCIYYTAKZ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/FCCZTAYZATTNSNEAXWA7U3HCO2OVQKT5/

https://lists.fedoraproject.org/archives/list/[email protected]/message/LE4O3PNDNNOMSKHNUKZKD3NGHIFUFDPX/

https://lists.fedoraproject.org/archives/list/[email protected]/message/NTBKKOLFFNHG6CM4ACDX4APHSD5ZX5N4/

https://lists.fedoraproject.org/archives/list/[email protected]/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/

https://lists.fedoraproject.org/archives/list/[email protected]/message/V3TALOUBYU2MQD4BPLRTDQUMBKGCAXUA/

https://lists.fedoraproject.org/archives/list/[email protected]/message/V53P2YOLEQH4J7S5QHXMKMZYFTVVMTMO/

https://lists.fedoraproject.org/archives/list/[email protected]/message/VT4AF72TJ2XNIKCR4WEBR7URBJJ4YZRD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/X36Y523UAZY5QFXZAAORNFY63HLBWX7N/

https://lists.fedoraproject.org/archives/list/[email protected]/message/YILCHHTNLH4GG4GSQBX2MZRKZBXOLCKE/

https://security.gentoo.org/glsa/202008-01

https://security.netapp.com/advisory/ntap-20200724-0004/

https://usn.ubuntu.com/4428-1/

Details

Source: MITRE

Published: 2020-06-18

Updated: 2020-10-16

Type: CWE-400

Risk Information

CVSS v2.0

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

CVSS v3.0

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