CVE-2019-9636

Description

Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by: Improper Handling of Unicode Encoding (with an incorrect netloc) during NFKC normalization. The impact is: Information disclosure (credentials, cookies, etc. that are cached against a given hostname). The components are: urllib.parse.urlsplit, urllib.parse.urlparse. The attack vector is: A specially crafted URL could be incorrectly parsed to locate cookies or authentication data and send that information to a different host than when parsed correctly. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

How to fix CVE-2019-9636

To remediate CVE-2019-9636, upgrade the affected package to a fixed version below.

• —upgrade to 2.7.16-r1 or later
• —upgrade to 3.6.8-r0 or later
• —upgrade to 2.7.16-2 or later

Is CVE-2019-9636 being exploited?

Moderate — EPSS is 8.8%. Track this CVE but it's not at the top of the prioritisation list.

Affected packages (3)

• from 0, < 2.7.16-r1
• from 0, < 3.6.8-r0
• from 0, < 2.7.16-2

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2019-9636
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2019-9636