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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWdyNGMtNXJxNi1jZ2gz

OPC UA applications can allow a remote attacker to determine a Server's private key

An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.

Permalink: https://github.com/advisories/GHSA-gr4c-5rq6-cgh3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWdyNGMtNXJxNi1jZ2gz
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 6 years ago
Updated: about 2 years ago

CVSS Score: 5.3
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Percentage: 0.0017
EPSS Percentile: 0.54503

Identifiers: GHSA-gr4c-5rq6-cgh3, CVE-2018-7559
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-7559
• https://github.com/OPCFoundation/UA-.NET-Legacy/commit/e2a781b38efb8686d2bd850c2f2372b5c670bc45
• https://github.com/OPCFoundation/UA-.NETStandard/commit/ebcf026a54dd0c9052cff009d96d827ac923d150
• https://github.com/advisories/GHSA-gr4c-5rq6-cgh3
• https://opcfoundation-onlineapplications.org/faq/SecurityBulletins/OPC_Foundation_Security_Bulletin_CVE-2018-7559.pdf
• http://www.securityfocus.com/bid/108688

Repository: https://github.com/OPCFoundation/UA-.NET-Legacy
Blast Radius: 1.0

Affected Packages