{"answers":{"affected":"It affects 9 products.","exploited":"There is no known exploitation of CVE-2018-7858 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2018-7858 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 12 Mar 2018. 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-2018-7858 and fix it if it is affected.\n\nWhat it is: CVE-2018-7858 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 12 Mar 2018. 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-2018-7858 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-2018-7858/ (Markdown: https://insights.sbomify.com/CVE-2018-7858/index.md)","id":"CVE-2018-7858","markdown":"https://insights.sbomify.com/CVE-2018-7858/index.md","name":"CVE-2018-7858","record":{"aliases":["DEBIAN-CVE-2018-7858","GHSA-f62g-jrwm-hq59","RHSA-2018:1416","UBUNTU-CVE-2018-7858"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"QEMU emulator","requires_auth":"low_privilege","summary":"Local privileged users can crash the QEMU process via out-of-bounds access in the Cirrus VGA emulator, causing denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"leap","vendor":"opensuse"},{"product":"qemu","vendor":"qemu"},{"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":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.","ecosystems":["Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation"],"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":"Denial of service in n/a","id":"CVE-2018-7858","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","opensuse:leap","qemu:qemu","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":"denial_of_service","year":"2018"},"n_packages":20,"n_references":9,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-7859"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-img","purl":"pkg:rpm/redhat/qemu-img","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm","purl":"pkg:rpm/redhat/qemu-kvm","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-common","purl":"pkg:rpm/redhat/qemu-kvm-common","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-debuginfo","purl":"pkg:rpm/redhat/qemu-kvm-debuginfo","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-tools","purl":"pkg:rpm/redhat/qemu-kvm-tools","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-img","purl":"pkg:rpm/redhat/qemu-img","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm","purl":"pkg:rpm/redhat/qemu-kvm","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-common","purl":"pkg:rpm/redhat/qemu-kvm-common","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-debuginfo","purl":"pkg:rpm/redhat/qemu-kvm-debuginfo","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-tools","purl":"pkg:rpm/redhat/qemu-kvm-tools","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-img","purl":"pkg:rpm/redhat/qemu-img","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm","purl":"pkg:rpm/redhat/qemu-kvm","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-common","purl":"pkg:rpm/redhat/qemu-kvm-common","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-debuginfo","purl":"pkg:rpm/redhat/qemu-kvm-debuginfo","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-tools","purl":"pkg:rpm/redhat/qemu-kvm-tools","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-img","purl":"pkg:rpm/redhat/qemu-img","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm","purl":"pkg:rpm/redhat/qemu-kvm","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-common","purl":"pkg:rpm/redhat/qemu-kvm-common","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-debuginfo","purl":"pkg:rpm/redhat/qemu-kvm-debuginfo","source":"RHSA-2018:1416"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["10:1.5.3-156.el7_5.1"],"introduced":["0"],"last_affected":[],"package":"qemu-kvm-tools","purl":"pkg:rpm/redhat/qemu-kvm-tools","source":"RHSA-2018:1416"}],"prev":{"headline":"Denial of service in Modicon M580 Modicon M340 Modicon Quantum Modicon Premium","id":"CVE-2018-7857"},"products":["n/a"],"published":"2018-03-12","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":"2024-08-05","vendors":["n/a"]},"summary":"Local privileged users can crash the QEMU process via out-of-bounds access in the Cirrus VGA emulator, causing denial of service.","url":"https://insights.sbomify.com/CVE-2018-7858/"}