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 |
Upstream |
Released
(2.7.16-3)
|
| Ubuntu 21.04 (Hirsute Hippo) |
Not vulnerable
(2.7.16-3)
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Not vulnerable
(2.7.16-3)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(2.7.15-4ubuntu4~18.04.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Released
(2.7.12-1ubuntu0~16.04.8)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(2.7.6-8ubuntu0.6+esm2)
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/979daae300916adb399ab5b51410b6ebd0888f13 |
||
|
python3.4 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.4.10)
|
| 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+esm2)
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/42ad4101d3ba7ca3c371dadf0f8880764c9f15fb |
||
|
python3.5 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.5.7)
|
| 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
(3.5.2-2ubuntu0~16.04.8)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Needed
|
|
|
Patches: Upstream: https://github.com/python/cpython/commit/4749f1b69000259e23b4cc6f63c542a9bdc62f1b |
||
|
python3.6 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.6.9)
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(3.6.8-1~18.04.2)
|
|
| 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/b241af861b37e20ad30533bc0b7e2e5491cc470f |
||
|
python3.7 Launchpad, Ubuntu, Debian |
Upstream |
Released
(3.7.3~rc1-1)
|
| Ubuntu 21.04 (Hirsute Hippo) |
Does not exist
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Does not exist
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Not vulnerable
(3.7.3-2)
|
|
| 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/e5123d81ffb3be35a1b2767d6ced1a097aaf77be |
||