Vulnerability identifier: #VU23623

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6022

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cybozu Office
Other software / Other software solutions

Vendor: Cybozu

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 "Customapp" function. A remote authenticated attacker can send a specially crafted HTTP request and alter arbitrary files on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cybozu Office: 10.0.0 - 10.8.3

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External links
http://jvn.jp/en/jp/JVN79854355/index.html
http://cs.cybozu.co.jp/2019/006976.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.