{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3738 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3738 is a high-severity use after free vulnerability in Samba Samba, published on 2 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-2021-3738 and fix it if it is affected.\n\nWhat it is: CVE-2021-3738 is a high-severity use after free vulnerability in Samba Samba, published on 2 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-2021-3738 in the wild and no public exploit code.\n\nAffected product: Samba Samba. 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-2021-3738/ (Markdown: https://insights.sbomify.com/CVE-2021-3738/index.md)","id":"CVE-2021-3738","markdown":"https://insights.sbomify.com/CVE-2021-3738/index.md","name":"CVE-2021-3738","record":{"aliases":["ALPINE-CVE-2021-3738","AZL-37005","AZL-8905","CLSA-2025-1760370936","CLSA-2025-1765285897","DEBIAN-CVE-2021-3738","ECHO-b5d2-47be-37f6","GHSA-jrfc-f73c-qmrr","UBUNTU-CVE-2021-3738"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Samba file server","requires_auth":"low_privilege","summary":"A use-after-free in Samba's DCE/RPC association groups can cause crashes or potentially allow privilege escalation by pointing to invalid session data.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"samba","vendor":"samba"}],"cvss":{"score":8.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.","ecosystems":[],"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":"Use after free in samba","id":"CVE-2021-3738","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"samba:samba","products":["samba:samba"],"type":"use_after_free","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Null dereference in kernel","id":"CVE-2021-3739"},"packages":[],"prev":{"headline":"Denial of service in python","id":"CVE-2021-3737"},"products":["samba"],"published":"2022-03-02","related":[{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2012-1182","kev_date_added":null,"published":"2012-04-10"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2007-2446","kev_date_added":null,"published":"2007-05-14"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2004-0600","kev_date_added":null,"published":"2004-07-23"},{"cvss_score":10,"headline":"Denial of service in n/a","id":"CVE-1999-0810","kev_date_added":null,"published":"2000-01-04"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-1999-0182","kev_date_added":null,"published":"1999-09-29"},{"cvss_score":9.8,"headline":"Weak cryptography in Samba","id":"CVE-2022-45141","kev_date_added":null,"published":"2023-03-06"},{"cvss_score":9.3,"headline":"Other in n/a","id":"CVE-2009-1886","kev_date_added":null,"published":"2009-06-24"}],"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":"2024-08-03","vendors":["n/a"]},"summary":"A use-after-free in Samba's DCE/RPC association groups can cause crashes or potentially allow privilege escalation by pointing to invalid session data.","url":"https://insights.sbomify.com/CVE-2021-3738/"}