{"answers":{"affected":"It affects 7 products.","exploited":"There is no known exploitation of CVE-2021-40142 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-40142 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-40142 is a high-severity memory corruption vulnerability in Siemens Telecontrol Server Basic, published on 27 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-40142 and fix it if it is affected.\n\nWhat it is: CVE-2021-40142 is a high-severity memory corruption vulnerability in Siemens Telecontrol Server Basic, published on 27 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-40142 in the wild and no public exploit code.\n\nAffected product: Siemens Telecontrol Server Basic. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-40142/ (Markdown: https://insights.sbomify.com/CVE-2021-40142/index.md)","id":"CVE-2021-40142","markdown":"https://insights.sbomify.com/CVE-2021-40142/index.md","name":"CVE-2021-40142","record":{"aliases":["GHSA-5524-cf37-2p8f"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OPC Foundation LDS","requires_auth":"none","summary":"Remote attackers can cause a denial of service in OPC Foundation Local Discovery Server by sending crafted messages that trigger a buffer over-read.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"local_discover_server","vendor":"opcfoundation"},{"product":"simatic_net_pc","vendor":"siemens"},{"product":"simatic_process_historian_opc_ua_server_firmware","vendor":"siemens"},{"product":"simatic_wincc","vendor":"siemens"},{"product":"simatic_wincc_runtime","vendor":"siemens"},{"product":"simatic_wincc_unified_scada_runtime","vendor":"siemens"},{"product":"telecontrol_server_basic","vendor":"siemens"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Memory corruption in n/a","id":"CVE-2021-40142","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"siemens:telecontrol_server_basic","products":["siemens:telecontrol_server_basic"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"HTTP header injection in Sonatype Nexus Repository","id":"CVE-2021-40143"},"packages":[],"prev":{"headline":"Cisco Common Services Platform Collector Stored Cross-Site Scripting Vulnerability","id":"CVE-2021-40131"},"products":["n/a"],"published":"2021-08-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2024-08-04","vendors":["n/a"]},"summary":"Remote attackers can cause a denial of service in OPC Foundation Local Discovery Server by sending crafted messages that trigger a buffer over-read.","url":"https://insights.sbomify.com/CVE-2021-40142/"}