Vulnerability identifier: #VU82716

Vulnerability risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46802

CWE-ID: CWE-91

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
e-Tax
Client/Desktop applications / Other client software

Vendor: National Tax Agency

Description

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

The vulnerability exists due to improper input validation when processing XML data. A remote unauthenticated attacker can pass specially crafted XML data to the application and perform arbitrary actions on the system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

e-Tax: 3.0.10

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External links
http://www.e-tax.nta.go.jp/topics/topics_20231102.htm
http://jvn.jp/en/jp/JVN14762986/

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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.