{"answers":{"affected":"It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-12904 exists.","fix":"Apply the vendor's patch.","what":"CVE-2018-12904 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Jun 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-2018-12904 and fix it if it is affected.\n\nWhat it is: CVE-2018-12904 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-12904 exists.\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-2018-12904/ (Markdown: https://insights.sbomify.com/CVE-2018-12904/index.md)","id":"CVE-2018-12904","markdown":"https://insights.sbomify.com/CVE-2018-12904/index.md","name":"CVE-2018-12904","record":{"aliases":["DEBIAN-CVE-2018-12904","GHSA-vx6h-cqmq-qj84","UBUNTU-CVE-2018-12904"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel KVM","requires_auth":"none","summary":"Local attackers can escalate privileges or cause denial of service in nested virtualization environments due to missing CPL checks in the Linux kernel KVM module.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":4.9,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.0"},"cwes":[],"description":"In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2018-06-25","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2018-06-25","kind":"exploitdb","ref":"44944","stars":null,"title":"KVM (Nested Virtualization) - L1 Guest Privilege Escalation"}],"tier":"weaponised"},"has_fix":true,"headline":"Privilege escalation in n/a","id":"CVE-2018-12904","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","linux:linux_kernel"],"type":"privilege_escalation","year":"2018"},"n_packages":0,"n_references":8,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-12905"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-12903"},"products":["n/a"],"published":"2018-06-27","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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Local attackers can escalate privileges or cause denial of service in nested virtualization environments due to missing CPL checks in the Linux kernel KVM module.","url":"https://insights.sbomify.com/CVE-2018-12904/"}