{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-16838 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2018-16838 is a medium-severity authentication bypass vulnerability in Redhat Enterprise Linux, published on 25 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-16838 and fix it if it is affected.\n\nWhat it is: CVE-2018-16838 is a medium-severity authentication bypass vulnerability in Redhat Enterprise Linux, published on 25 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2018-16838 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2018-16838/ (Markdown: https://insights.sbomify.com/CVE-2018-16838/index.md)","id":"CVE-2018-16838","markdown":"https://insights.sbomify.com/CVE-2018-16838/index.md","name":"CVE-2018-16838","record":{"aliases":["DEBIAN-CVE-2018-16838","GHSA-h2vj-4wwx-54q4","MGASA-2019-0395","RHSA-2019:3651","SUSE-SU-2019:1476-1","SUSE-SU-2019:1477-1","SUSE-SU-2019:1480-1","UBUNTU-CVE-2018-16838","openSUSE-SU-2019:1589-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"SSSD identity provider","requires_auth":"low_privilege","summary":"SSSD allows all authenticated users to log in when Group Policy Objects are unreadable due to strict server-side permissions, bypassing access controls.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"sssd","vendor":"fedoraproject"},{"product":"enterprise_linux","vendor":"redhat"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"A flaw was found in sssd Group Policy Objects implementation. When the GPO is not readable by SSSD due to a too strict permission settings on the server side, SSSD will allow all authenticated users to login instead of denying access.","ecosystems":["Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","SUSE:Linux Enterprise Desktop 12 SP3","SUSE:Linux Enterprise Desktop 12 SP4","SUSE:Linux Enterprise Module for Basesystem 15","SUSE:Linux Enterprise Module for Basesystem 15 SP1","SUSE:Linux Enterprise Server 12 SP3","SUSE:Linux Enterprise Server 12 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Server for SAP Applications 12 SP4","SUSE:Linux Enterprise Software Development Kit 12 SP3","SUSE:Linux Enterprise Software Development Kit 12 SP4","openSUSE:Leap 15.0","openSUSE:Leap 15.1"],"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":"Auth bypass in sssd","id":"CVE-2018-16838","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"auth_bypass","year":"2018"},"n_packages":98,"n_references":7,"next":{"headline":"Memory corruption in curl:","id":"CVE-2018-16839"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libipa_hbac","purl":"pkg:rpm/redhat/libipa_hbac","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libipa_hbac-debuginfo","purl":"pkg:rpm/redhat/libipa_hbac-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_autofs","purl":"pkg:rpm/redhat/libsss_autofs","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_autofs-debuginfo","purl":"pkg:rpm/redhat/libsss_autofs-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_certmap","purl":"pkg:rpm/redhat/libsss_certmap","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_certmap-debuginfo","purl":"pkg:rpm/redhat/libsss_certmap-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_idmap","purl":"pkg:rpm/redhat/libsss_idmap","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_idmap-debuginfo","purl":"pkg:rpm/redhat/libsss_idmap-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_nss_idmap","purl":"pkg:rpm/redhat/libsss_nss_idmap","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_nss_idmap-debuginfo","purl":"pkg:rpm/redhat/libsss_nss_idmap-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_simpleifp","purl":"pkg:rpm/redhat/libsss_simpleifp","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_simpleifp-debuginfo","purl":"pkg:rpm/redhat/libsss_simpleifp-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_sudo","purl":"pkg:rpm/redhat/libsss_sudo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"libsss_sudo-debuginfo","purl":"pkg:rpm/redhat/libsss_sudo-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-libipa_hbac","purl":"pkg:rpm/redhat/python3-libipa_hbac","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-libipa_hbac-debuginfo","purl":"pkg:rpm/redhat/python3-libipa_hbac-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-libsss_nss_idmap","purl":"pkg:rpm/redhat/python3-libsss_nss_idmap","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-libsss_nss_idmap-debuginfo","purl":"pkg:rpm/redhat/python3-libsss_nss_idmap-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-sss","purl":"pkg:rpm/redhat/python3-sss","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-sss-debuginfo","purl":"pkg:rpm/redhat/python3-sss-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-sss-murmur","purl":"pkg:rpm/redhat/python3-sss-murmur","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-sss-murmur-debuginfo","purl":"pkg:rpm/redhat/python3-sss-murmur-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"python3-sssdconfig","purl":"pkg:rpm/redhat/python3-sssdconfig","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd","purl":"pkg:rpm/redhat/sssd","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-ad","purl":"pkg:rpm/redhat/sssd-ad","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-ad-debuginfo","purl":"pkg:rpm/redhat/sssd-ad-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-client","purl":"pkg:rpm/redhat/sssd-client","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-client-debuginfo","purl":"pkg:rpm/redhat/sssd-client-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-common","purl":"pkg:rpm/redhat/sssd-common","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-common-debuginfo","purl":"pkg:rpm/redhat/sssd-common-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-common-pac","purl":"pkg:rpm/redhat/sssd-common-pac","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-common-pac-debuginfo","purl":"pkg:rpm/redhat/sssd-common-pac-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-dbus","purl":"pkg:rpm/redhat/sssd-dbus","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-dbus-debuginfo","purl":"pkg:rpm/redhat/sssd-dbus-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-debuginfo","purl":"pkg:rpm/redhat/sssd-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-debugsource","purl":"pkg:rpm/redhat/sssd-debugsource","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-ipa","purl":"pkg:rpm/redhat/sssd-ipa","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-ipa-debuginfo","purl":"pkg:rpm/redhat/sssd-ipa-debuginfo","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-kcm","purl":"pkg:rpm/redhat/sssd-kcm","source":"RHSA-2019:3651"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:2.2.0-19.el8"],"introduced":["0"],"last_affected":[],"package":"sssd-kcm-debuginfo","purl":"pkg:rpm/redhat/sssd-kcm-debuginfo","source":"RHSA-2019:3651"}],"prev":{"headline":"Ansible Leaks Data Passed to ssh-keygen","id":"CVE-2018-16837"},"products":["sssd"],"published":"2019-03-25","related":[{"cvss_score":8.8,"headline":"Other in SSSD","id":"CVE-2022-4254","kev_date_added":null,"published":"2023-02-01"},{"cvss_score":8.8,"headline":"Auth bypass in sssd","id":"CVE-2012-3462","kev_date_added":null,"published":"2019-12-26"},{"cvss_score":6.8,"headline":"Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation","id":"CVE-2026-104048","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":6.8,"headline":"Denial of service in n/a","id":"CVE-2015-5292","kev_date_added":null,"published":"2015-10-29"},{"cvss_score":6.4,"headline":"Sssd: use-after-free crash in sssd' 'sssd_pam' process","id":"CVE-2026-12610","kev_date_added":null,"published":"2026-06-30"},{"cvss_score":6.2,"headline":"Sssd: sssd: denial of service via incomplete identity provider authentication requests","id":"CVE-2026-104046","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":5.5,"headline":"Sssd: sssd: denial of service via memory exhaustion in autofs responder","id":"CVE-2026-104031","kev_date_added":null,"published":"2026-10-06"}],"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":"2025-02-13","vendors":["[UNKNOWN]"]},"summary":"SSSD allows all authenticated users to log in when Group Policy Objects are unreadable due to strict server-side permissions, bypassing access controls.","url":"https://insights.sbomify.com/CVE-2018-16838/"}