{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-4008 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-4008 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 17 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-4008 and fix it if it is affected.\n\nWhat it is: CVE-2021-4008 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 17 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-4008 in the wild and no public exploit code.\n\nAffected product: Debian Debian 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-2021-4008/ (Markdown: https://insights.sbomify.com/CVE-2021-4008/index.md)","id":"CVE-2021-4008","markdown":"https://insights.sbomify.com/CVE-2021-4008/index.md","name":"CVE-2021-4008","record":{"aliases":["AZL-44349","DEBIAN-CVE-2021-4008","GHSA-h4h6-8v79-695g","SUSE-SU-2021:14863-1","SUSE-SU-2021:4064-1","SUSE-SU-2021:4065-1","SUSE-SU-2021:4066-1","SUSE-SU-2021:4069-1","SUSE-SU-2021:4070-1","SUSE-SU-2021:4071-1","UBUNTU-CVE-2021-4008","openSUSE-SU-2021:1587-1","openSUSE-SU-2021:4070-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"X11 display server","requires_auth":"low_privilege","summary":"An out-of-bounds access in the X11 server allows attackers to compromise data confidentiality, integrity, and system availability.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"x_server","vendor":"x.org"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcRenderCompositeGlyphs function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","ecosystems":["SUSE:Enterprise Storage 6","SUSE:HPE Helion OpenStack 8","SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","SUSE:Linux Enterprise High Performance Computing 15-ESPOS","SUSE:Linux Enterprise High Performance Computing 15-LTSS","SUSE:Linux Enterprise Module for Basesystem 15 SP2","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Linux Enterprise Module for Development Tools 15 SP2","SUSE:Linux Enterprise Module for Development Tools 15 SP3","SUSE:Linux Enterprise Point of Sale 11 SP3","SUSE:Linux Enterprise Server 11 SP4-LTSS","SUSE:Linux Enterprise Server 12 SP2-BCL","SUSE:Linux Enterprise Server 12 SP3-BCL","SUSE:Linux Enterprise Server 12 SP3-LTSS","SUSE:Linux Enterprise Server 12 SP4-LTSS","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server 15 SP1-BCL","SUSE:Linux Enterprise Server 15 SP1-LTSS","SUSE:Linux Enterprise Server 15-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Server for SAP Applications 12 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15","SUSE:Linux Enterprise Server for SAP Applications 15 SP1","SUSE:Linux Enterprise Software Development Kit 12 SP5","SUSE:Linux Enterprise Workstation Extension 15 SP2","SUSE:Linux Enterprise Workstation Extension 15 SP3","SUSE:OpenStack Cloud 8","SUSE:OpenStack Cloud 9","SUSE:OpenStack Cloud Crowbar 8","SUSE:OpenStack Cloud Crowbar 9","openSUSE:Leap 15.2","openSUSE:Leap 15.3"],"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":"Memory corruption in xorg-x11-server","id":"CVE-2021-4008","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","x.org:x_server"],"type":"memory_corruption","year":"2021"},"n_packages":34,"n_references":11,"next":{"headline":"Memory corruption in xorg-x11-server","id":"CVE-2021-4009"},"packages":[{"ecosystem":"SUSE:Enterprise Storage 6","fixed":["1.20.3-14.5.19.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Enterprise%20Storage%206","source":"SUSE-SU-2021:4071-1"},{"ecosystem":"SUSE:HPE Helion OpenStack 8","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=HPE%20Helion%20OpenStack%208","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS","fixed":["1.20.3-14.5.19.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS","source":"SUSE-SU-2021:4071-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS","fixed":["1.20.3-14.5.19.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS","source":"SUSE-SU-2021:4071-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-ESPOS","fixed":["1.19.6-8.33.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS","source":"SUSE-SU-2021:4065-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-LTSS","fixed":["1.19.6-8.33.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS","source":"SUSE-SU-2021:4065-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP2","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP2","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP2","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Development Tools 15 SP3","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:Linux Enterprise Point of Sale 11 SP3","fixed":["7.4-27.122.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3","source":"SUSE-SU-2021:14863-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4-LTSS","fixed":["7.4-27.122.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS","source":"SUSE-SU-2021:14863-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2-BCL","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-BCL","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-LTSS","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP4-LTSS","fixed":["1.19.6-4.25.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS","source":"SUSE-SU-2021:4064-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["1.19.6-10.26.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2021:4066-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 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15","fixed":["1.19.6-8.33.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015","source":"SUSE-SU-2021:4065-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP1","fixed":["1.20.3-14.5.19.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1","source":"SUSE-SU-2021:4071-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["1.19.6-10.26.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2021:4066-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP2","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP3","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3","source":"SUSE-SU-2021:4070-1"},{"ecosystem":"SUSE:OpenStack Cloud 8","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20OpenStack%20Cloud%208","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:OpenStack Cloud 9","fixed":["1.19.6-4.25.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20OpenStack%20Cloud%209","source":"SUSE-SU-2021:4064-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 8","fixed":["7.6_1.18.3-76.43.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%208","source":"SUSE-SU-2021:4069-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 9","fixed":["1.19.6-4.25.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/suse/xorg-x11-server\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%209","source":"SUSE-SU-2021:4064-1"},{"ecosystem":"openSUSE:Leap 15.2","fixed":["1.20.3-lp152.8.33.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/opensuse/xorg-x11-server\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2021:1587-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["1.20.3-22.5.39.1"],"introduced":["0"],"last_affected":[],"package":"xorg-x11-server","purl":"pkg:rpm/opensuse/xorg-x11-server\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2021:4070-1"}],"prev":{"headline":"Rapid7 Insight Agent Privilege Escalation","id":"CVE-2021-4007"},"products":["xorg-x11-server"],"published":"2021-12-17","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"An out-of-bounds access in the X11 server allows attackers to compromise data confidentiality, integrity, and system availability.","url":"https://insights.sbomify.com/CVE-2021-4008/"}