Vulnerability identifier: #VU97673

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23463

CWE-ID: CWE-611

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
H2 Database
Server applications / Database software

Vendor: H2 Database Engine

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. A remote attacker 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

H2 Database: 1.4.198 - 1.4.200

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External links
http://github.com/h2database/h2database/issues/3195
http://snyk.io/vuln/SNYK-JAVA-COMH2DATABASE-1769238
http://github.com/h2database/h2database/pull/3199
http://github.com/h2database/h2database/commit/d83285fd2e48fb075780ee95badee6f5a15ea7f8%23diff-008c2e4462609982199cd83e7cf6f1d6b41296b516783f6752c44b9f15dc7bc3
http://www.oracle.com/security-alerts/cpuapr2022.html
http://security.netapp.com/advisory/ntap-20230818-0010/

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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.