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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2019-07-13T20:29:42
Updated: 2024-08-05T12:12:29.756Z
Reserved: 2019-07-13T00:00:00
Link: CVE-2018-20852
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-07-13T21:15:10.377
Modified: 2024-11-21T04:02:18.780
Link: CVE-2018-20852
Redhat