{"answers":{"affected":"It affects 10 products.","exploited":"There is no known exploitation of CVE-2019-3878 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2019-3878 is a high-severity authentication bypass vulnerability in Canonical Ubuntu Linux, published on 26 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-2019-3878 and fix it if it is affected.\n\nWhat it is: CVE-2019-3878 is a high-severity authentication bypass vulnerability in Canonical Ubuntu Linux, published on 26 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-2019-3878 in the wild and no public exploit code.\n\nAffected product: Canonical Ubuntu 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-2019-3878/ (Markdown: https://insights.sbomify.com/CVE-2019-3878/index.md)","id":"CVE-2019-3878","markdown":"https://insights.sbomify.com/CVE-2019-3878/index.md","name":"CVE-2019-3878","record":{"aliases":["DEBIAN-CVE-2019-3878","GHSA-6gx9-985p-w8c8","RHSA-2019:0985","UBUNTU-CVE-2019-3878"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache SAML module","requires_auth":"low_privilege","summary":"Attackers can bypass authentication in mod_auth_mellon by sending special SAML ECP headers when Apache is configured as a reverse proxy.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"fedora","vendor":"fedoraproject"},{"product":"mod_auth_mellon","vendor":"mod_auth_mellon_project"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_desktop","vendor":"redhat"},{"product":"enterprise_linux_server","vendor":"redhat"},{"product":"enterprise_linux_server_aus","vendor":"redhat"},{"product":"enterprise_linux_server_eus","vendor":"redhat"},{"product":"enterprise_linux_server_tus","vendor":"redhat"},{"product":"enterprise_linux_workstation","vendor":"redhat"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"},{"id":"CWE-305","name":"Authentication Bypass by Primary Weakness"}],"description":"A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.","ecosystems":["Red Hat:enterprise_linux:8::appstream"],"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 mod auth mellon","id":"CVE-2019-3878","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","fedoraproject:fedora","redhat:enterprise_linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation"],"type":"auth_bypass","year":"2019"},"n_packages":4,"n_references":9,"next":{"headline":"Missing authorization in ovirt-engine","id":"CVE-2019-3879"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.14.0-3.el8_0.2"],"introduced":["0"],"last_affected":[],"package":"mod_auth_mellon","purl":"pkg:rpm/redhat/mod_auth_mellon","source":"RHSA-2019:0985"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.14.0-3.el8_0.2"],"introduced":["0"],"last_affected":[],"package":"mod_auth_mellon-debuginfo","purl":"pkg:rpm/redhat/mod_auth_mellon-debuginfo","source":"RHSA-2019:0985"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.14.0-3.el8_0.2"],"introduced":["0"],"last_affected":[],"package":"mod_auth_mellon-debugsource","purl":"pkg:rpm/redhat/mod_auth_mellon-debugsource","source":"RHSA-2019:0985"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.14.0-3.el8_0.2"],"introduced":["0"],"last_affected":[],"package":"mod_auth_mellon-diagnostics-debuginfo","purl":"pkg:rpm/redhat/mod_auth_mellon-diagnostics-debuginfo","source":"RHSA-2019:0985"}],"prev":{"headline":"Open redirect in mod auth mellon","id":"CVE-2019-3877"},"products":["mod_auth_mellon"],"published":"2019-03-26","related":[{"cvss_score":9.8,"headline":"SaltStack Salt Authentication Bypass","id":"CVE-2020-11651","kev_date_added":"2021-11-03","published":"2020-04-30"},{"cvss_score":9.8,"headline":"OpenSMTPD Remote Code Execution","id":"CVE-2020-7247","kev_date_added":"2022-03-25","published":"2020-01-29"},{"cvss_score":9.8,"headline":"Exim Out-of-bounds Write","id":"CVE-2019-16928","kev_date_added":"2022-03-03","published":"2019-09-27"},{"cvss_score":9.8,"headline":"Exim Buffer Overflow","id":"CVE-2018-6789","kev_date_added":"2021-11-03","published":"2018-02-08"},{"cvss_score":9.8,"headline":"Oracle Java SE and Java SE Embedded Remote Code Execution","id":"CVE-2015-2590","kev_date_added":"2022-03-03","published":"2015-07-16"},{"cvss_score":9.8,"headline":"Oracle JRE Remote Code Execution","id":"CVE-2013-0422","kev_date_added":"2022-05-25","published":"2013-01-10"},{"cvss_score":9.8,"headline":"Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution","id":"CVE-2011-3544","kev_date_added":"2022-03-03","published":"2011-10-19"}],"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":["uninett"]},"summary":"Attackers can bypass authentication in mod_auth_mellon by sending special SAML ECP headers when Apache is configured as a reverse proxy.","url":"https://insights.sbomify.com/CVE-2019-3878/"}