PYSEC-2023-192

2023-10-0417:15:00

Google

osv.dev

urllib3

http client

python

cookie header

information leak

http redirects

patch

version 1.26.17

version 2.0.5

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

6.8 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

36.2%

JSON

urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn’t treat the Cookie HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a Cookie header and unknowingly leak information via HTTP redirects to a different origin if that user doesn’t disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.

CPENameOperatorVersion
urllib3eq1.26.5
urllib3eq1.25
urllib3eq2.0.2
urllib3eq1.9.1
urllib3eq1.10.4
urllib3eq1.25.1
urllib3eq1.25.5
urllib3eq1.2
urllib3eq1.26.0
urllib3eq1.25.3