#VU65538 HTTP response splitting in Cybozu Office - CVE-2022-32453

Vulnerability identifier: #VU65538

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-32453

CWE-ID: CWE-113

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 HTTP splitting attacks.

The vulnerability exists due to software does not corrector process CRLF character sequences. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cybozu Office: 10.0.0 - 10.8.5

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External links
https://jvn.jp/en/jp/JVN20573662/index.html
https://cs.cybozu.co.jp/2022/007584.html

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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.