CVE-2018-20852
Published: 13 July 2019
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com). When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3.
Priority
Medium
CVSS 3 base score: 5.3
Status
| Package | Release | Status |
|---|---|---|
|
python2.7 Launchpad, Ubuntu, Debian |
bionic |
Released
(2.7.15-4ubuntu4~18.04.1)
|
| cosmic |
Ignored
(reached end-of-life)
|
|
| disco |
Released
(2.7.16-2ubuntu0.1)
|
|
| eoan |
Not vulnerable
(2.7.16-3)
|
|
| focal |
Not vulnerable
(2.7.16-3)
|
|
| groovy |
Not vulnerable
(2.7.16-3)
|
|
| hirsute |
Not vulnerable
(2.7.16-3)
|
|
| impish |
Not vulnerable
(2.7.16-3)
|
|
| jammy |
Not vulnerable
(2.7.16-3)
|
|
| precise |
Released
(2.7.3-0ubuntu3.14)
|
|
| trusty |
Released
(2.7.6-8ubuntu0.6+esm2)
|
|
| upstream |
Released
(2.7.16-3)
|
|
| xenial |
Released
(2.7.12-1ubuntu0~16.04.8)
|
|
|
python3.4 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(3.4.3-1ubuntu1~14.04.7+esm2)
|
|
| upstream |
Released
(3.4.10)
|
|
| xenial |
Does not exist
|
|
|
python3.5 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Needed
|
|
| upstream |
Released
(3.5.7)
|
|
| xenial |
Released
(3.5.2-2ubuntu0~16.04.8)
|
|
|
python3.6 Launchpad, Ubuntu, Debian |
bionic |
Released
(3.6.8-1~18.04.2)
|
| cosmic |
Ignored
(reached end-of-life)
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.6.9)
|
|
| xenial |
Does not exist
|
|
|
python3.7 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(3.7.3-2)
|
| cosmic |
Not vulnerable
(3.7.3-2)
|
|
| disco |
Not vulnerable
(3.7.3-2)
|
|
| eoan |
Not vulnerable
(3.7.3-2)
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(3.7.3~rc1-1)
|
|
| xenial |
Does not exist
|