Denial of service in OPC Foundation UA Legacy Java Stack

1) Resource exhaustion

EUVDB-ID: #VU64468

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-30551

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the handling of message chunks. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OPC UA Legacy Java Stack: All versions

CPE2.3

• cpe:2.3:a:opc_foundation:opc_ua_legacy_java_stack:*:*:*:*:*:*:*:*

External links

https://github.com/OPCFoundation/UA-Java-Legacy
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-30551.pdf
https://opcfoundation.org
https://www.zerodayinitiative.com/advisories/ZDI-22-854/
https://www.zerodayinitiative.com/advisories/ZDI-22-873/

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.