CVE-2020-8492medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Description
Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.
References
https://github.com/python/cpython/pull/18284
https://python-security.readthedocs.io/vuln/urllib-basic-auth-regex.html
https://bugs.python.org/issue39503
https://security.netapp.com/advisory/ntap-20200221-0001/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00003.html
https://usn.ubuntu.com/4333-1/
https://usn.ubuntu.com/4333-2/
https://security.gentoo.org/glsa/202005-09
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
https://lists.apache.org/thread.html/[email protected]%3Ccommits.cassandra.apache.org%3E
https://lists.apache.org/thread.html/[email protected]%3Ccommits.cassandra.apache.org%3E
Details
Source: MITRE
Published: 2020-01-30
Updated: 2021-09-16
Type: CWE-400
Risk Information
CVSS v2
Base Score: 7.1
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 8.6
Severity: HIGH
CVSS v3
Base Score: 6.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.8
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from 2.7.0 to 2.7.17 (inclusive)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from 3.5.0 to 3.5.9 (inclusive)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from 3.6.0 to 3.6.10 (inclusive)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from 3.7.0 to 3.7.6 (inclusive)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from 3.8.0 to 3.8.1 (inclusive)
Configuration 2
OR
Configuration 3
OR
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Configuration 4
OR
Configuration 5
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 156171 | Ubuntu 18.04 LTS : Python vulnerabilities (USN-5200-1) | Nessus | Ubuntu Local Security Checks | medium |
| 154450 | NewStart CGSL CORE 5.05 / MAIN 5.05 : python3 Multiple Vulnerabilities (NS-SA-2021-0147) | Nessus | NewStart CGSL Local Security Checks | medium |
| 150511 | SUSE SLES11 Security Update : python (SUSE-SU-2020:14306-1) | Nessus | SuSE Local Security Checks | medium |
| 150311 | FreeBSD : tauthon -- Regular Expression Denial of Service (c7855866-c511-11eb-ae1d-b42e991fc52e) | Nessus | FreeBSD Local Security Checks | medium |
| 148008 | Ubuntu 18.04 LTS / 20.04 LTS : Python vulnerabilities (USN-4754-3) | Nessus | Ubuntu Local Security Checks | critical |
| 147364 | NewStart CGSL MAIN 6.02 : python3 Multiple Vulnerabilities (NS-SA-2021-0059) | Nessus | NewStart CGSL Local Security Checks | medium |
| 147302 | NewStart CGSL CORE 5.04 / MAIN 5.04 : python3 Multiple Vulnerabilities (NS-SA-2021-0029) | Nessus | NewStart CGSL Local Security Checks | medium |
| 146036 | CentOS 8 : python38:3.8 (CESA-2020:4641) | Nessus | CentOS Local Security Checks | critical |
| 145883 | CentOS 8 : python3 (CESA-2020:4433) | Nessus | CentOS Local Security Checks | medium |
| 145389 | openSUSE Security Update : python3 (openSUSE-2020-2333) | Nessus | SuSE Local Security Checks | critical |
| 145326 | openSUSE Security Update : python3 (openSUSE-2020-2332) | Nessus | SuSE Local Security Checks | critical |
| 144586 | SUSE SLED15 / SLES15 Security Update : python3 (SUSE-SU-2020:3930-1) | Nessus | SuSE Local Security Checks | critical |
| 144443 | SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3865-1) | Nessus | SuSE Local Security Checks | critical |
| 143646 | SUSE SLES12 Security Update : python36 (SUSE-SU-2020:3563-1) | Nessus | SuSE Local Security Checks | high |
| 142786 | Oracle Linux 8 : python3 (ELSA-2020-4433) | Nessus | Oracle Linux Local Security Checks | medium |
| 142431 | RHEL 8 : python38:3.8 (RHSA-2020:4641) | Nessus | Red Hat Local Security Checks | critical |
| 142400 | RHEL 8 : python3 (RHSA-2020:4433) | Nessus | Red Hat Local Security Checks | medium |
| 141770 | Scientific Linux Security Update : python3 on SL7.x x86_64 (20201001) | Nessus | Scientific Linux Local Security Checks | medium |
| 141631 | CentOS 7 : python3 (CESA-2020:3888) | Nessus | CentOS Local Security Checks | medium |
| 141218 | Oracle Linux 7 : python3 (ELSA-2020-3888) | Nessus | Oracle Linux Local Security Checks | medium |
| 141029 | RHEL 7 : python3 (RHSA-2020:3888) | Nessus | Red Hat Local Security Checks | medium |
| 140678 | FreeBSD : Python -- multiple vulnerabilities (2cb21232-fb32-11ea-a929-a4bf014bf5f7) | Nessus | FreeBSD Local Security Checks | high |
| 139339 | Amazon Linux 2 : python / python3 (ALAS-2020-1471) | Nessus | Amazon Linux Local Security Checks | medium |
| 139087 | Amazon Linux AMI : python27 / python34, python35, python36 (ALAS-2020-1407) | Nessus | Amazon Linux Local Security Checks | medium |
| 139086 | Amazon Linux AMI : python26 (ALAS-2020-1406) | Nessus | Amazon Linux Local Security Checks | medium |
| 138529 | Debian DLA-2280-1 : python3.5 security update | Nessus | Debian Local Security Checks | critical |
| 138368 | Fedora 31 : python36 (2020-ea5bdbcc90) | Nessus | Fedora Local Security Checks | medium |
| 138125 | FreeBSD : Python -- multiple vulnerabilities (33c05d57-bf6e-11ea-ba1e-0800273f78d3) | Nessus | FreeBSD Local Security Checks | medium |
| 138114 | Fedora 32 : python36 (2020-8bdd3fd7a4) | Nessus | Fedora Local Security Checks | medium |
| 137877 | Photon OS 1.0: Python3 PHSA-2020-1.0-0304 | Nessus | PhotonOS Local Security Checks | medium |
| 137580 | SUSE SLES12 Security Update : python (SUSE-SU-2020:1524-1) | Nessus | SuSE Local Security Checks | medium |
| 137488 | EulerOS 2.0 SP2 : python (EulerOS-SA-2020-1646) | Nessus | Huawei Local Security Checks | critical |
| 137118 | Fedora 32 : python3 (2020-98e0f0f11b) | Nessus | Fedora Local Security Checks | medium |
| 137089 | Amazon Linux 2 : python (ALAS-2020-1432) | Nessus | Amazon Linux Local Security Checks | medium |
| 136954 | Fedora 31 : python38 (2020-6a88dad4a0) | Nessus | Fedora Local Security Checks | medium |
| 136639 | GLSA-202005-09 : Python: Denial of service | Nessus | Gentoo Local Security Checks | medium |
| 136281 | Ubuntu 20.04 : Python vulnerabilities (USN-4333-2) | Nessus | Ubuntu Local Security Checks | medium |
| 136219 | EulerOS Virtualization for ARM 64 3.0.2.0 : python (EulerOS-SA-2020-1516) | Nessus | Huawei Local Security Checks | critical |
| 135944 | FreeBSD : Python -- Regular Expression DoS attack against client (a27b0bb6-84fc-11ea-b5b4-641c67a117d8) | Nessus | FreeBSD Local Security Checks | medium |
| 135894 | Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : Python vulnerabilities (USN-4333-1) | Nessus | Ubuntu Local Security Checks | medium |
| 135785 | Photon OS 3.0: Python3 PHSA-2020-3.0-0078 | Nessus | PhotonOS Local Security Checks | medium |
| 135784 | Photon OS 3.0: Python2 PHSA-2020-3.0-0078 | Nessus | PhotonOS Local Security Checks | medium |
| 135634 | EulerOS Virtualization 3.0.2.2 : python (EulerOS-SA-2020-1472) | Nessus | Huawei Local Security Checks | critical |
| 135556 | EulerOS 2.0 SP3 : python (EulerOS-SA-2020-1427) | Nessus | Huawei Local Security Checks | critical |
| 135492 | Photon OS 1.0: Python2 PHSA-2020-1.0-0288 | Nessus | PhotonOS Local Security Checks | medium |
| 135299 | Photon OS 2.0: Python3 PHSA-2020-2.0-0226 | Nessus | PhotonOS Local Security Checks | medium |
| 135197 | SUSE SLES12 Security Update : python3 (SUSE-SU-2020:0854-1) | Nessus | SuSE Local Security Checks | medium |
| 135133 | EulerOS Virtualization for ARM 64 3.0.6.0 : python3 (EulerOS-SA-2020-1346) | Nessus | Huawei Local Security Checks | medium |
| 135131 | EulerOS Virtualization for ARM 64 3.0.6.0 : python2 (EulerOS-SA-2020-1344) | Nessus | Huawei Local Security Checks | medium |
| 134812 | EulerOS 2.0 SP5 : python (EulerOS-SA-2020-1321) | Nessus | Huawei Local Security Checks | medium |
| 134788 | EulerOS 2.0 SP8 : python3 (EulerOS-SA-2020-1296) | Nessus | Huawei Local Security Checks | medium |
| 134787 | EulerOS 2.0 SP8 : python2 (EulerOS-SA-2020-1295) | Nessus | Huawei Local Security Checks | medium |
| 134286 | SUSE SLES12 Security Update : python36 (SUSE-SU-2020:0557-1) | Nessus | SuSE Local Security Checks | medium |
| 134197 | openSUSE Security Update : python3 (openSUSE-2020-274) | Nessus | SuSE Local Security Checks | medium |
| 134159 | SUSE SLED15 / SLES15 Security Update : python (SUSE-SU-2020:0510-1) | Nessus | SuSE Local Security Checks | medium |
| 134081 | SUSE SLED15 / SLES15 Security Update : python3 (SUSE-SU-2020:0467-1) | Nessus | SuSE Local Security Checks | medium |