{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2023-51440 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-51440 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-51440 is a high-severity denial of service vulnerability in Siemens SIMATIC CP 343-1, published on 13 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-51440 and fix it if it is affected.\n\nWhat it is: CVE-2023-51440 is a high-severity denial of service vulnerability in Siemens SIMATIC CP 343-1, published on 13 Feb 2024. 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-2023-51440 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC CP 343-1. 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-2023-51440/ (Markdown: https://insights.sbomify.com/CVE-2023-51440/index.md)","id":"CVE-2023-51440","markdown":"https://insights.sbomify.com/CVE-2023-51440/index.md","name":"CVE-2023-51440","record":{"aliases":["GHSA-j4h9-5vj5-4vff"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens SIMATIC CP","requires_auth":"none","summary":"Unauthenticated remote attackers can cause denial of service by injecting spoofed TCP RST packets due to improper TCP sequence number validation.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"simatic_cp_343-1_firmware","vendor":"siemens"},{"product":"simatic_cp_343-1_lean_firmware","vendor":"siemens"},{"product":"siplus_net_cp_343-1_firmware","vendor":"siemens"},{"product":"siplus_net_cp_343-1_lean_firmware","vendor":"siemens"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:T/RC:C","version":"3.1"},"cwes":[{"id":"CWE-940","name":"Improper Verification of Source of a Communication Channel"}],"description":"A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0) (All versions), SIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0) (All versions). Affected products incorrectly validate TCP sequence numbers. This could allow an unauthenticated remote attacker to create a denial of service condition by injecting spoofed TCP RST packets.","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":"Denial of service in SIMATIC CP 343-1","id":"CVE-2023-51440","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Axis 1.x (EOL) may allow SSRF when untrusted input is passed to the service admin HTTP API","id":"CVE-2023-51441"},"packages":[],"prev":{"headline":"Memory corruption in JT2Go","id":"CVE-2023-51439"},"products":["SIMATIC CP 343-1","SIMATIC CP 343-1 Lean","SIPLUS NET CP 343-1","SIPLUS NET CP 343-1 Lean"],"published":"2024-02-13","related":[{"cvss_score":9.7,"headline":"Missing authorization in n/a","id":"CVE-2015-8214","kev_date_added":null,"published":"2015-11-27"},{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2016-8673","kev_date_added":null,"published":"2016-11-23"},{"cvss_score":6.5,"headline":"Other in SIMATIC CP 343-1 (incl. SIPLUS variants)","id":"CVE-2018-4843","kev_date_added":null,"published":"2018-03-20"},{"cvss_score":5.3,"headline":"Information disclosure in n/a","id":"CVE-2016-8672","kev_date_added":null,"published":"2016-11-23"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-08-02","vendors":["Siemens"]},"summary":"Unauthenticated remote attackers can cause denial of service by injecting spoofed TCP RST packets due to improper TCP sequence number validation.","url":"https://insights.sbomify.com/CVE-2023-51440/"}