Multiple vulnerabilities in OPC Foundation UA .NET Standard

Published: 2022-06-17 | Updated: 2023-03-02

Risk	Medium
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2022-29864 CVE-2022-29866 CVE-2022-29865 CVE-2022-29862
CWE-ID	CWE-400 CWE-303 CWE-835
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	OPC UA .NET Standard Server applications / Other server solutions
Vendor	OPC Foundation

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

Updated 02.03.2023

Added vulnerability #4

1) Resource exhaustion

EUVDB-ID: #VU64467

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-2022-29864

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 .NET Standard: 1.04.368

CPE2.3

cpe:2.3:a:opc_foundation:opc_ua_.net_standard:1.04.368:*:*:*:*:*:*:*

External links

https://opcfoundation.org/security/
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-29864.pdf
https://www.zerodayinitiative.com/advisories/ZDI-22-854/

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.

2) Resource exhaustion

EUVDB-ID: #VU64466

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-2022-29866

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 TranslateBrowsePathsToNodeId method. 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 .NET Standard: 1.04.368

CPE2.3

cpe:2.3:a:opc_foundation:opc_ua_.net_standard:1.04.368:*:*:*:*:*:*:*

External links

https://opcfoundation.org/security/
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2022-29866.pdf
https://www.zerodayinitiative.com/advisories/ZDI-22-855/

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.

3) Incorrect Implementation of Authentication Algorithm

EUVDB-ID: #VU64463

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-29865

CWE-ID: CWE-303 - Incorrect Implementation of Authentication Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to to bypass authentication process.

The vulnerability exists due to the lack of proper validation of a user-supplied certificate. A remote attacker can bypass the application authentication mechanism and connection to an untrusted peer.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OPC UA .NET Standard: All versions

CPE2.3