#VU55467 Input validation error in Cybozu Garoon - CVE-2021-20761

Vulnerability identifier: #VU55467

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20761

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cybozu Garoon
Web applications / Other software

Vendor: Cybozu

Description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input in in E-mail. A remote administrator can pass specially crafted input to the application and alter the data of E-mail without the appropriate privilege.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cybozu Garoon: 4.0.0 - 5.0.2

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External links
https://jvn.jp/en/jp/JVN54794245/index.html
https://cs.cybozu.co.jp/2021/007206.html

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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