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Appaloosa Scout

Vulnerability · NVD

CVE-2018-20852

MEDIUM 5.3

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.

Attack vector : Network No privileges required No user interaction
Show raw CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS 3.88% above median percentile 89.2%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Vulnerable CPE configurations (5)
Vendor Product Versions
python python
All platforms (wildcard)
 ≥2.0 ≤2.7.16
python python
All platforms (wildcard)
 ≥3.0.0 <3.4.10
python python
All platforms (wildcard)
 ≥3.5.0 <3.5.7
python python
All platforms (wildcard)
 ≥3.6.0 <3.6.9
python python
All platforms (wildcard)
 ≥3.7.0 <3.7.3
View on NVD ↗ Advisory · bugs.python.org Advisory · python-security.readthedocs.io