Vulnerability identifier: #VU24843

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8315

CWE-ID: CWE-427

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CPython
Universal components / Libraries / Scripting languages

Vendor: Python.org

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to direct calls to "LoadLibraryW()" in "getpathp.c" without any "LOAD_LIBRARY_SEARCH*" flags. A remote attacker can use a malicious copy of api-ms-win-core-path-l1-1-0.dll, which being loaded and used instead of the system's copy and execute arbitrary code on victim's system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

CPython: 3.6.0 - 3.6.10, 3.7.0 - 3.7.6, 3.8.0 - 3.8.1

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External links
http://bugs.python.org/issue39401

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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.