Multiple vulnerabilities in Cybozu Office

Published: 2019-12-17

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-6022 CVE-2019-6023
CWE-ID	CWE-22 CWE-284
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Cybozu Office Other software / Other software solutions
Vendor	Cybozu

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Path traversal

EUVDB-ID: #VU23623

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 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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

External links

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

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.

2) Improper access control

EUVDB-ID: #VU23624

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6023

CWE-ID: CWE-284 - Improper Access Control