{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-10957 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-10957 is a high-severity vulnerability in Dovecot Dovecot, published on 18 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-10957 and fix it if it is affected.\n\nWhat it is: CVE-2020-10957 is a high-severity vulnerability in Dovecot Dovecot, published on 18 May 2020. 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-2020-10957 in the wild and no public exploit code.\n\nAffected product: Dovecot Dovecot. 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-2020-10957/ (Markdown: https://insights.sbomify.com/CVE-2020-10957/index.md)","id":"CVE-2020-10957","markdown":"https://insights.sbomify.com/CVE-2020-10957/index.md","name":"CVE-2020-10957","record":{"aliases":["ALPINE-CVE-2020-10957","DEBIAN-CVE-2020-10957","GHSA-q55g-848v-f654","RHSA-2020:2901","UBUNTU-CVE-2020-10957"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Dovecot IMAP/POP3 server","requires_auth":"none","summary":"Unauthenticated attackers can crash Dovecot services by sending malformed NOOP commands, causing a denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dovecot","vendor":"dovecot"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.0/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N","version":"3.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp.","ecosystems":["Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb"],"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":"Null dereference in n/a","id":"CVE-2020-10957","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"dovecot:dovecot","products":["dovecot:dovecot"],"type":"null_dereference","year":"2020"},"n_packages":16,"n_references":10,"next":{"headline":"Use after free in n/a","id":"CVE-2020-10958"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/redhat/dovecot","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debuginfo","purl":"pkg:rpm/redhat/dovecot-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debugsource","purl":"pkg:rpm/redhat/dovecot-debugsource","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql","purl":"pkg:rpm/redhat/dovecot-mysql","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql-debuginfo","purl":"pkg:rpm/redhat/dovecot-mysql-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql","purl":"pkg:rpm/redhat/dovecot-pgsql","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql-debuginfo","purl":"pkg:rpm/redhat/dovecot-pgsql-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole","purl":"pkg:rpm/redhat/dovecot-pigeonhole","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole-debuginfo","purl":"pkg:rpm/redhat/dovecot-pigeonhole-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot","purl":"pkg:rpm/redhat/dovecot","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debuginfo","purl":"pkg:rpm/redhat/dovecot-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-debugsource","purl":"pkg:rpm/redhat/dovecot-debugsource","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-devel","purl":"pkg:rpm/redhat/dovecot-devel","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-mysql-debuginfo","purl":"pkg:rpm/redhat/dovecot-mysql-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pgsql-debuginfo","purl":"pkg:rpm/redhat/dovecot-pgsql-debuginfo","source":"RHSA-2020:2901"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["1:2.3.8-2.el8_2.1"],"introduced":["0"],"last_affected":[],"package":"dovecot-pigeonhole-debuginfo","purl":"pkg:rpm/redhat/dovecot-pigeonhole-debuginfo","source":"RHSA-2020:2901"}],"prev":{"headline":"Server-side request forgery in n/a","id":"CVE-2020-10956"},"products":["n/a"],"published":"2020-05-18","related":[{"cvss_score":7.7,"headline":"Auth bypass in OX Dovecot Pro","id":"CVE-2026-24031","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Denial of service in OX Dovecot Pro","id":"CVE-2025-59032","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Denial of service in OX Dovecot Pro","id":"CVE-2026-27858","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":7.5,"headline":"Path traversal in n/a","id":"CVE-2021-29157","kev_date_added":null,"published":"2021-06-28"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2020-7046","kev_date_added":null,"published":"2020-02-12"},{"cvss_score":7.5,"headline":"Null dereference in n/a","id":"CVE-2019-11494","kev_date_added":null,"published":"2019-05-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"Unauthenticated attackers can crash Dovecot services by sending malformed NOOP commands, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2020-10957/"}