#VU77524 XML External Entity injection in hutool - CVE-2023-3276

Vulnerability identifier: #VU77524

Vulnerability risk: Low

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

CVE-ID: CVE-2023-3276

CWE-ID: CWE-611

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
hutool
Other software / Other software solutions

Vendor: Dromara

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input in the readBySax function. A remote user on the local network can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

hutool: 5.8.0 - 5.8.19

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External links
https://vuldb.com/?ctiid.231626
https://vuldb.com/?id.231626
https://fbdhhhh47.github.io/2023/06/06/hutool-XXE/
https://github.com/advisories/GHSA-p2qf-9vp6-3jjq

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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