CVE-2020-8492
CVE-2020-8492
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.5 · Medium · EPSS 6.6% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
python2.7 Debian:11
- Affected ranges
- ECOSYSTEM: < 2.7.18-2
Update to 2.7.18-2
python2.7 Ubuntu:Pro:14.04:LTS
- Versions
- 2.7.5-8ubuntu3
- 2.7.5-8ubuntu4
- 2.7.6-2
- 2.7.6-2ubuntu1
- 2.7.6-3
- 2.7.6-3ubuntu1
- 2.7.6-4
- 2.7.6-4ubuntu1
- 2.7.6-5
- 2.7.6-7
- 2.7.6-8
- 2.7.6-8ubuntu0.2
- 2.7.6-8ubuntu0.3
- 2.7.6-8ubuntu0.4
- 2.7.6-8ubuntu0.5
- 2.7.6-8ubuntu0.6+esm2
- 2.7.6-8ubuntu0.6+esm3
- Affected ranges
- ECOSYSTEM: < 2.7.6-8ubuntu0.6+esm5
Update to 2.7.6-8ubuntu0.6+esm5
python3.4 Ubuntu:Pro:14.04:LTS
- Versions
- 3.4~b1-0ubuntu3
- 3.4~b1-4ubuntu4
- 3.4~b1-4ubuntu6
- 3.4~b1-5ubuntu2
- 3.4~b2-1
- 3.4~b3-1ubuntu1
- 3.4~rc1-1build1
- 3.4~rc2-1
- 3.4~rc3-0ubuntu1
- 3.4.0-1
- 3.4.0-2ubuntu1
- 3.4.0-2ubuntu1.1
- 3.4.3-1ubuntu1~14.04.1
- 3.4.3-1ubuntu1~14.04.3
- 3.4.3-1ubuntu1~14.04.4
- 3.4.3-1ubuntu1~14.04.5
- 3.4.3-1ubuntu1~14.04.6
- 3.4.3-1ubuntu1~14.04.7
- 3.4.3-1ubuntu1~14.04.7+esm2
- 3.4.3-1ubuntu1~14.04.7+esm4
- Affected ranges
- ECOSYSTEM: < 3.4.3-1ubuntu1~14.04.7+esm6
Update to 3.4.3-1ubuntu1~14.04.7+esm6
python3.5 Ubuntu:Pro:14.04:LTS
- Versions
- 3.5.2-2ubuntu0~16.04.4~14.04.1
- Affected ranges
- ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
Update to 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
python2.7 Ubuntu:16.04:LTS
- Versions
- 2.7.10-4ubuntu1
- 2.7.10-4ubuntu2
- 2.7.11-2
- 2.7.11-3
- 2.7.11-4
- 2.7.11-6
- 2.7.11-7
- 2.7.11-7ubuntu1
- 2.7.12-1~16.04
- 2.7.12-1ubuntu0~16.04.1
- 2.7.12-1ubuntu0~16.04.2
- 2.7.12-1ubuntu0~16.04.3
- 2.7.12-1ubuntu0~16.04.4
- 2.7.12-1ubuntu0~16.04.8
- 2.7.12-1ubuntu0~16.04.9
- Affected ranges
- ECOSYSTEM: < 2.7.12-1ubuntu0~16.04.11
Update to 2.7.12-1ubuntu0~16.04.11
python3.5 Ubuntu:16.04:LTS
- Versions
- 3.5.0-3
- 3.5.0-3ubuntu1
- 3.5.1~rc1-2ubuntu1
- 3.5.1-1
- 3.5.1-2
- 3.5.1-3
- 3.5.1-5
- 3.5.1-6ubuntu1
- 3.5.1-6ubuntu2
- 3.5.1-9ubuntu1
- 3.5.1-10
- 3.5.2-2~16.01
- 3.5.2-2~16.04
- 3.5.2-2ubuntu0~16.04.1
- 3.5.2-2ubuntu0~16.04.2
- 3.5.2-2ubuntu0~16.04.3
- 3.5.2-2ubuntu0~16.04.4
- 3.5.2-2ubuntu0~16.04.5
- 3.5.2-2ubuntu0~16.04.8
- 3.5.2-2ubuntu0~16.04.9
- Affected ranges
- ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.10
Update to 3.5.2-2ubuntu0~16.04.10
python2.7 Ubuntu:18.04:LTS
- Versions
- 2.7.14-2ubuntu2
- 2.7.14-4
- 2.7.14-6
- 2.7.14-7
- 2.7.14-8
- 2.7.15~rc1-1
- 2.7.15~rc1-1ubuntu0.1
- 2.7.15-4ubuntu4~18.04
- 2.7.15-4ubuntu4~18.04.1
- 2.7.15-4ubuntu4~18.04.2
- 2.7.17-1~18.04
- Affected ranges
- ECOSYSTEM: < 2.7.17-1~18.04ubuntu1
Update to 2.7.17-1~18.04ubuntu1
python3.6 Ubuntu:18.04:LTS
- Versions
- 3.6.3-1ubuntu1
- 3.6.4~rc1-1
- 3.6.4~rc1-2
- 3.6.4-1
- 3.6.4-2
- 3.6.4-3build1
- 3.6.4-4
- 3.6.5~rc1-1
- 3.6.5-3
- 3.6.6-1~18.04
- 3.6.7-1~18.04
- 3.6.8-1~18.04.1
- 3.6.8-1~18.04.2
- 3.6.8-1~18.04.3
- 3.6.9-1~18.04
- Affected ranges
- ECOSYSTEM: < 3.6.9-1~18.04ubuntu1
Update to 3.6.9-1~18.04ubuntu1
python3.7 Ubuntu:18.04:LTS
- Versions
- 3.7.0~a2-1
- 3.7.0~a3-1
- 3.7.0~a3-2
- 3.7.0~a3-3
- 3.7.0~a4-1
- 3.7.0~b1-1
- 3.7.0~b1-1build1
- 3.7.0~b2-1
- 3.7.0~b3-1
- 3.7.0-1~18.04
- 3.7.1-1~18.04
- 3.7.3-2~18.04.1
- 3.7.5-2~18.04
- 3.7.5-2~18.04.4
- Affected ranges
- ECOSYSTEM: < 3.7.5-2ubuntu1~18.04.2
Update to 3.7.5-2ubuntu1~18.04.2
python3.8 Ubuntu:18.04:LTS
- Versions
- 3.8.0-3~18.04
- 3.8.0-3~18.04.1
- Affected ranges
- ECOSYSTEM: < 3.8.0-3ubuntu1~18.04.2
Update to 3.8.0-3ubuntu1~18.04.2
python2.7 Ubuntu:20.04:LTS
- Versions
- 2.7.17~rc1-1
- 2.7.17-1
- 2.7.17-1ubuntu5
- 2.7.17-1ubuntu6
- 2.7.18~rc1-2
- 2.7.18-1~20.04
- Affected ranges
- ECOSYSTEM: < 2.7.18-1~20.04.1
Update to 2.7.18-1~20.04.1
python3.8 Ubuntu:20.04:LTS
- Versions
- 3.8.0-1
- 3.8.0-2
- 3.8.0-3
- 3.8.0-4
- 3.8.0-5
- 3.8.1-2ubuntu3
- 3.8.2~rc1-1ubuntu1
- 3.8.2-1
- 3.8.2-1ubuntu1
- Affected ranges
- ECOSYSTEM: < 3.8.2-1ubuntu1.1
Update to 3.8.2-1ubuntu1.1
Original sources
- https://bugs.python.org/issue39503
- https://python-security.readthedocs.io/vuln/urllib-basic-auth-regex.html
- https://github.com/python/cpython/pull/18284
- 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.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APGWEMYZIY5VHLCSZ3HD67PA5Z2UQFGH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WOKDEXLYW5UQ4S7PA7E37IITOC7C56J/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/
- https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html
- https://lists.apache.org/thread.html/rdb31a608dd6758c6093fd645aea3fbf022dd25b37109b6aaea5bc0b5%40%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/rfec113c733162b39633fd86a2d0f34bf42ac35f711b3ec1835c774da%40%3Ccommits.cassandra.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-8492