#VU21780 Improper Certificate Validation in urllib3 - CVE-2019-11324

Vulnerability identifier: #VU21780

Vulnerability risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-11324

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
urllib3
Web applications / Modules and components for CMS

Vendor: urlib3

Description

Mitigation
Install updates from vendor's website.

Vulnerable software versions

urllib3: 0.3, 0.3.1, 0.4, 0.4.1, 1.0 - 1.0.2, 1.1, 1.2 - 1.24.1, 1.3, 1.4, 1.5, 1.6, 1.7 - 1.7.1, 1.8 - 1.8.3, 1.9 - 1.9.1, 1.10 - 1.10.4, 1.11, 1.12, 1.13 - 1.13.1, 1.14, 1.15 - 1.15.1, 1.16, 1.17, 1.18 - 1.18.1, 1.19 - 1.19.1

External links
https://github.com/urllib3/urllib3/compare/a6ec68a...1efadf4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.