{"answers":{"affected":"2 open source packages ship an affected version, including OPCFoundation.NetStandard.Opc.Ua. It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-7559 in the wild and no public exploit code.","fix":"Upgrade OPCFoundation.NetStandard.Opc.Ua to 1.3.352.12 or later.","what":"CVE-2018-7559 is a medium-severity vulnerability in n/a, published on 13 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-7559 and fix it if it is affected.\n\nWhat it is: CVE-2018-7559 is a medium-severity vulnerability in n/a, published on 13 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2018-7559 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- OPCFoundation.NetStandard.Opc.Ua (NuGet): affected all versions; fixed in 1.3.352.12\n- OPCFoundation.NetStandard.Opc.Ua (NuGet): affected all versions; fixed in 1.3.352.12\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2018-7559/ (Markdown: https://insights.sbomify.com/CVE-2018-7559/index.md)","id":"CVE-2018-7559","markdown":"https://insights.sbomify.com/CVE-2018-7559/index.md","name":"CVE-2018-7559","record":{"aliases":["GHSA-gr4c-5rq6-cgh3"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"OPC UA .NET Stack","requires_auth":"low_privilege","summary":"Remote attackers can determine a server's private key via an oracle attack using crafted UserIdentityTokens in OPC UA .NET applications.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ua-.net-legacy","vendor":"opcfoundation"},{"product":"ua-.netstandard","vendor":"opcfoundation"}],"cvss":{"score":5.3,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.0"},"cwes":[{"id":"CWE-320","name":null}],"description":"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.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"OPC UA applications can allow a remote attacker to determine a Server's private key","id":"CVE-2018-7559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"information_disclosure","year":"2018"},"n_packages":2,"n_references":4,"next":{"headline":"AWS Lambda parser is vulnerable to Regular Expression Denial of Service","id":"CVE-2018-7560"},"packages":[{"ecosystem":"NuGet","fixed":["1.3.352.12"],"introduced":["0"],"last_affected":[],"package":"OPCFoundation.NetStandard.Opc.Ua","purl":null,"source":"GHSA-gr4c-5rq6-cgh3"},{"ecosystem":"NuGet","fixed":["1.3.352.12"],"introduced":["0"],"last_affected":[],"package":"OPCFoundation.NetStandard.Opc.Ua","purl":"pkg:nuget/OPCFoundation.NetStandard.Opc.Ua","source":"GHSA-gr4c-5rq6-cgh3"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2018-7557"},"products":["n/a"],"published":"2018-06-13","related":[{"cvss_score":8.8,"headline":"Supply chain in n/a","id":"CVE-2017-12070","kev_date_added":null,"published":"2018-06-14"},{"cvss_score":8.2,"headline":"XML external entity in n/a","id":"CVE-2018-12585","kev_date_added":null,"published":"2018-09-14"},{"cvss_score":7.5,"headline":"Denial of service in OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy","id":"CVE-2021-27432","kev_date_added":null,"published":"2021-05-20"},{"cvss_score":5.3,"headline":"Moderate severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua","id":"CVE-2018-12087","kev_date_added":null,"published":"2018-10-03"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Remote attackers can determine a server's private key via an oracle attack using crafted UserIdentityTokens in OPC UA .NET applications.","url":"https://insights.sbomify.com/CVE-2018-7559/"}