Vulnerability identifier: #VU45634

Vulnerability risk: Medium

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-2020-7521

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
APC Easy UPS On-Line
Hardware solutions / Other hardware appliances

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the "FileUploadServlet" method. A remote attacker can send a specially crafted HTTP request and upload executable files to non-specified directories.

Note: This vulnerability affects the following versions of APC Easy UPS On-Line Software:

• SFAPV9601 v2.0 and earlier

Mitigation
Install update from vendor's website.

Vulnerable software versions

APC Easy UPS On-Line: 2.0

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-224-02
http://www.se.com/ww/en/download/document/SEVD-2020-224-04/
http://www.zerodayinitiative.com/advisories/ZDI-20-1006/

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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.