{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-8833 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2020-8833 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 22 Apr 2020. 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-2020-8833 and fix it if it is affected.\n\nWhat it is: CVE-2020-8833 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 22 Apr 2020. 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-2020-8833 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-2020-8833/ (Markdown: https://insights.sbomify.com/CVE-2020-8833/index.md)","id":"CVE-2020-8833","markdown":"https://insights.sbomify.com/CVE-2020-8833/index.md","name":"CVE-2020-8833","record":{"aliases":["GHSA-w9g5-3qgc-xmgx","UBUNTU-CVE-2020-8833"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Ubuntu crash reporter","requires_auth":"low_privilege","summary":"A race condition in Apport allows local attackers to escalate privileges to root if symlink protection is disabled.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","cpe":[{"product":"apport","vendor":"apport_project"},{"product":"ubuntu_linux","vendor":"canonical"}],"cvss":{"score":5.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.","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":"Apport race condition in crash report permissions","id":"CVE-2020-8833","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux"],"type":"race_condition","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"Linux kernel KVM Power8 conflicting use of HSTATE_HOST_R1","id":"CVE-2020-8834"},"packages":[],"prev":{"headline":"Ubuntu 18.04 Linux kernel i915 incomplete fix for CVE-2019-14615","id":"CVE-2020-8832"},"products":["Apport"],"published":"2020-04-22","related":[{"cvss_score":7.8,"headline":"Denial of service in Apport","id":"CVE-2022-28657","kev_date_added":null,"published":"2024-06-04"},{"cvss_score":7.8,"headline":"Apport treats the container PID as the global PID when /proc/\u003cglobal_pid\u003e/ is missing","id":"CVE-2018-6552","kev_date_added":null,"published":"2018-05-31"},{"cvss_score":7.8,"headline":"Privilege escalation in Apport","id":"CVE-2017-14177","kev_date_added":null,"published":"2018-02-02"},{"cvss_score":7.8,"headline":"Privilege escalation in Apport","id":"CVE-2017-14179","kev_date_added":null,"published":"2018-02-02"},{"cvss_score":7.8,"headline":"Privilege escalation in Apport","id":"CVE-2017-14180","kev_date_added":null,"published":"2018-02-02"},{"cvss_score":7.8,"headline":"Path traversal in n/a","id":"CVE-2017-10708","kev_date_added":null,"published":"2017-07-18"},{"cvss_score":7.8,"headline":"Code injection in n/a","id":"CVE-2016-9949","kev_date_added":null,"published":"2016-12-17"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-16","vendors":["Canonical"]},"summary":"A race condition in Apport allows local attackers to escalate privileges to root if symlink protection is disabled.","url":"https://insights.sbomify.com/CVE-2020-8833/"}