{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-42389 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-42389 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42389 is a medium-severity denial of service vulnerability in yandex clickhouse, published on 14 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-42389 and fix it if it is affected.\n\nWhat it is: CVE-2021-42389 is a medium-severity denial of service vulnerability in yandex clickhouse, published on 14 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-42389 in the wild and no public exploit code.\n\nAffected product: yandex 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-2021-42389/ (Markdown: https://insights.sbomify.com/CVE-2021-42389/index.md)","id":"CVE-2021-42389","markdown":"https://insights.sbomify.com/CVE-2021-42389/index.md","name":"CVE-2021-42389","record":{"aliases":["GHSA-xfh5-vqx3-c7p9"],"analysis":{"component_type":"database","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ClickHouse database","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service in ClickHouse by submitting a malicious query that triggers a divide-by-zero error in the Delta compression codec.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"JFROG","cpe":[{"product":"clickhouse","vendor":"clickhouse"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-369","name":"Divide By Zero"}],"description":"Divide-by-zero in Clickhouse's Delta compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo operation without being checked for 0.","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":"Denial of service in clickhouse","id":"CVE-2021-42389","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in clickhouse","id":"CVE-2021-42390"},"packages":[],"prev":{"headline":"Memory corruption in clickhouse","id":"CVE-2021-42388"},"products":["clickhouse"],"published":"2022-03-14","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":"2024-08-04","vendors":["yandex"]},"summary":"An attacker can cause a denial of service in ClickHouse by submitting a malicious query that triggers a divide-by-zero error in the Delta compression codec.","url":"https://insights.sbomify.com/CVE-2021-42389/"}