#VU26160 Path traversal in Worry-Free Business Security - CVE-2020-8600

Vulnerability identifier: #VU26160

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8600

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Worry-Free Business Security
Client/Desktop applications / Software for system administration

Vendor: Trend Micro

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 "TempFileName" parameter provided to the "cgiRecvFile.exe" endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system, allowing to manipulate a key file to bypass authentication.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Worry-Free Business Security: 9.5 - 10.0

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External links
https://success.trendmicro.com/jp/solution/000244836
https://success.trendmicro.com/solution/000245572
https://www.zerodayinitiative.com/advisories/ZDI-20-307/

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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.