SB2020081250 - Multiple vulnerabilities in Schneider Electric APC Easy UPS On-Line

Description

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal (CVE-ID: CVE-2020-7521)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

2) Path traversal (CVE-ID: CVE-2020-7522)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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 "SoundUploadServlet" 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

Remediation

Install update from vendor's website.

References

• https://ics-cert.us-cert.gov/advisories/icsa-20-224-02
• https://www.se.com/ww/en/download/document/SEVD-2020-224-04/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1006/
• https://www.zerodayinitiative.com/advisories/ZDI-20-1007/