{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2023-47118 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-47118 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-47118 is a high-severity memory corruption vulnerability in ClickHouse, published on 20 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-47118 and fix it if it is affected.\n\nWhat it is: CVE-2023-47118 is a high-severity memory corruption vulnerability in ClickHouse, published on 20 Dec 2023. 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-2023-47118 in the wild and no public exploit code.\n\nAffected product: ClickHouse. 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-2023-47118/ (Markdown: https://insights.sbomify.com/CVE-2023-47118/index.md)","id":"CVE-2023-47118","markdown":"https://insights.sbomify.com/CVE-2023-47118/index.md","name":"CVE-2023-47118","record":{"aliases":["GHSA-g22g-p6q2-x39v","UBUNTU-CVE-2023-47118"],"analysis":{"component_type":"database","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ClickHouse database","requires_auth":"none","summary":"Unauthenticated attackers can crash the ClickHouse server via a heap buffer overflow in the T64 codec decompression logic.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"clickhouse","vendor":"clickhouse"},{"product":"clickhouse_cloud","vendor":"clickhouse"}],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted payload to the native interface exposed by default on port 9000/tcp, triggering a bug in the decompression logic of T64 codec that crashes the ClickHouse server process. This attack does not require authentication. Note that this exploit can also be triggered via HTTP protocol, however, the attacker will need a valid credential as the HTTP authentication take places first. This issue has been fixed in version 23.10.2.13-stable, 23.9.4.11-stable, 23.8.6.16-lts and 23.3.16.7-lts.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Heap buffer overflow in T64 codec decompression","id":"CVE-2023-47118","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"HTML injection in oneboxed links","id":"CVE-2023-47119"},"packages":[],"prev":{"headline":"Object Relational Mapper Leak Vulnerability in Filtering Task in Label Studio","id":"CVE-2023-47117"},"products":["ClickHouse"],"published":"2023-12-20","related":[{"cvss_score":9.8,"headline":"Memory corruption in ClickHouse","id":"CVE-2019-16535","kev_date_added":null,"published":"2019-12-30"},{"cvss_score":9.8,"headline":"Missing authorization in ClickHouse","id":"CVE-2018-14670","kev_date_added":null,"published":"2019-08-15"},{"cvss_score":9.8,"headline":"Code injection in ClickHouse","id":"CVE-2018-14671","kev_date_added":null,"published":"2019-08-15"},{"cvss_score":8.8,"headline":"Memory corruption in clickhouse","id":"CVE-2021-43304","kev_date_added":null,"published":"2022-03-14"},{"cvss_score":8.8,"headline":"Memory corruption in clickhouse","id":"CVE-2021-43305","kev_date_added":null,"published":"2022-03-14"},{"cvss_score":8.8,"headline":"Server-side request forgery in ClickHouse","id":"CVE-2018-14668","kev_date_added":null,"published":"2019-08-15"},{"cvss_score":8.2,"headline":"Stack overflow leading to DoS can be triggered by a malicious authenticated client.","id":"CVE-2019-16536","kev_date_added":null,"published":"2025-05-21"}],"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":"2024-08-02","vendors":["ClickHouse"]},"summary":"Unauthenticated attackers can crash the ClickHouse server via a heap buffer overflow in the T64 codec decompression logic.","url":"https://insights.sbomify.com/CVE-2023-47118/"}