CVE-2020-8492
Published: 30 January 2020
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.
Priority
Low
CVSS 3 base score: 6.5
Status
| Package | Release | Status |
|---|---|---|
|
python2.7 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Needs triage
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Needs triage
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Released
(2.7.18-1~20.04.1)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(2.7.17-1~18.04ubuntu1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(2.7.12-1ubuntu0~16.04.11)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(2.7.6-8ubuntu0.6+esm5)
|
|
|
python3.4 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Does not exist
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(3.4.3-1ubuntu1~14.04.7+esm6)
|
|
|
python3.5 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Does not exist
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(3.5.2-2ubuntu0~16.04.10)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Needs triage
|
|
|
python3.6 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Does not exist
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(3.6.9-1~18.04ubuntu1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/69cdeeb93e0830004a495ed854022425b93b3f3e |
||
|
python3.7 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Does not exist
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(3.7.5-2ubuntu1~18.04.2)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/b57a73694e26e8b2391731b5ee0b1be59437388e |
||
|
python3.8 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.10 (Impish Indri) |
Does not exist
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Released
(3.8.2-1ubuntu1.1)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(3.8.0-3ubuntu1~18.04.2)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/ea9e240aa02372440be8024acb110371f69c9d41 |
||
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8492
- https://github.com/python/cpython/pull/18284
- https://python-security.readthedocs.io/vuln/urllib-basic-auth-regex.html
- https://github.com/python/cpython/commit/0b297d4ff1c0e4480ad33acae793fbaf4bf015b4
- https://ubuntu.com/security/notices/USN-4333-1
- https://ubuntu.com/security/notices/USN-4333-2
- https://ubuntu.com/security/notices/USN-4754-3
- https://ubuntu.com/security/notices/USN-5200-1
- NVD
- Launchpad
- Debian