#VU74341 Heap-based buffer overflow in JustSystems Corporation products - CVE-2023-22291

Vulnerability identifier: #VU74341

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-22291

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ichitaro
Client/Desktop applications / Office applications
Hanako
Client/Desktop applications / Office applications
Label Mighty
Client/Desktop applications / Office applications
Raku Hagaki
Client/Desktop applications / Office applications
Easy postcard
Client/Desktop applications / Office applications
JUST Office
Client/Desktop applications / Office applications
JUST Government
Client/Desktop applications / Office applications
JUST Police
Client/Desktop applications / Office applications
homepage builder
Client/Desktop applications / Office applications

Vendor: JustSystems Corporation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Frame stream parser. A remote attacker can trick the victim to open a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ichitaro: Viewer - 2023

Hanako: Pro 3 - Personal 2022

Label Mighty: POP in Shop12 - 17

Raku Hagaki: Max

Easy postcard: 2021

JUST Office: 3 - 5

JUST Government: 3 - 5

JUST Police: 3 - 5

homepage builder: 21

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External links
https://jvn.jp/en/jp/JVN79149117/index.html
https://www.justsystems.com/jp/corporate/info/js23001.html
https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1687

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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.