{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2023-5379 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-5379 is a high-severity denial of service vulnerability in Redhat Jboss Enterprise Application Platform, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-5379 and fix it if it is affected.\n\nWhat it is: CVE-2023-5379 is a high-severity denial of service vulnerability in Redhat Jboss Enterprise Application Platform, published on 12 Dec 2023. 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-2023-5379 in the wild and no public exploit code.\n\nAffected product: Redhat Jboss Enterprise Application Platform. 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-2023-5379/ (Markdown: https://insights.sbomify.com/CVE-2023-5379/index.md)","id":"CVE-2023-5379","markdown":"https://insights.sbomify.com/CVE-2023-5379/index.md","name":"CVE-2023-5379","record":{"aliases":["DEBIAN-CVE-2023-5379","GHSA-q462-4hrv-w27r","UBUNTU-CVE-2023-5379"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Undertow web server","requires_auth":"none","summary":"Attackers can cause a Denial of Service by sending AJP requests exceeding the max-header-size, forcing the server to close connections without response.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"jboss_enterprise_application_platform","vendor":"redhat"},{"product":"single_sign-on","vendor":"redhat"},{"product":"undertow","vendor":"redhat"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by mod_cluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because mod_proxy_cluster marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the max-header-size, causing a Denial of Service (DoS).","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":"Undertow: ajp request closes connection exceeding maxrequestsize","id":"CVE-2023-5379","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:jboss_enterprise_application_platform","products":["redhat:jboss_enterprise_application_platform","redhat:single_sign-on"],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"Xorg-x11-server: use-after-free bug in destroywindow","id":"CVE-2023-5380"},"packages":[],"prev":{"headline":"Stored XSS in SmodBIP and MegaBIP","id":"CVE-2023-5378"},"products":["Red Hat Data Grid 8","Red Hat Decision Manager 7","Red Hat Fuse 7","Red Hat JBoss Data Grid 7","Red Hat JBoss Enterprise Application Platform 7","Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7","Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7","Red Hat JBoss Fuse 6","Red Hat Process Automation 7","Red Hat Single Sign-On 7","Red Hat build of Quarkus","Red Hat support for Spring Boot"],"published":"2023-12-12","related":[{"cvss_score":9.8,"headline":"Red Hat JBoss Application Server Remote Code Execution","id":"CVE-2017-12149","kev_date_added":"2021-12-10","published":"2017-10-04"},{"cvss_score":5.9,"headline":"Red Hat JBoss Information Disclosure","id":"CVE-2010-1428","kev_date_added":"2022-05-25","published":"2010-04-28"},{"cvss_score":3.7,"headline":"Red Hat JBoss Authentication Bypass","id":"CVE-2010-0738","kev_date_added":"2022-05-25","published":"2010-04-28"},{"cvss_score":9.8,"headline":"Deserialization in n/a","id":"CVE-2016-3690","kev_date_added":null,"published":"2017-06-08"},{"cvss_score":9.8,"headline":"Deserialization in JBoss","id":"CVE-2017-7504","kev_date_added":null,"published":"2017-05-19"},{"cvss_score":9.8,"headline":"XML external entity in JBoss Enterprise Application Platform","id":"CVE-2017-7503","kev_date_added":null,"published":"2017-05-18"},{"cvss_score":9.8,"headline":"Improper Input Validation in JGroups","id":"CVE-2016-2141","kev_date_added":null,"published":"2016-06-30"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-04","vendors":["Red Hat"]},"summary":"Attackers can cause a Denial of Service by sending AJP requests exceeding the max-header-size, forcing the server to close connections without response.","url":"https://insights.sbomify.com/CVE-2023-5379/"}