{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-44731 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2021-44731 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 17 Feb 2022. 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-2021-44731 and fix it if it is affected.\n\nWhat it is: CVE-2021-44731 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 17 Feb 2022. 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-2021-44731 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-2021-44731/ (Markdown: https://insights.sbomify.com/CVE-2021-44731/index.md)","id":"CVE-2021-44731","markdown":"https://insights.sbomify.com/CVE-2021-44731/index.md","name":"CVE-2021-44731","record":{"aliases":["DEBIAN-CVE-2021-44731","GHSA-m3j9-xfh2-hrgc","UBUNTU-CVE-2021-44731"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"snapd package manager","requires_auth":"low_privilege","summary":"A race condition in snapd allows local attackers to gain root privileges by manipulating mount namespaces to execute arbitrary code.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"canonical","cpe":[{"product":"snapd","vendor":"canonical"},{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2023-07-09","github_poc":1,"max_poc_stars":4,"metasploit":0,"nuclei":0,"refs":[{"date":"2023-07-09T10:06:29Z","kind":"github_poc","ref":"https://github.com/deeexcee-io/CVE-2021-44731-snap-confine-SUID","stars":4,"title":"Local Privilege Escalation Exploit for CVE-2021-44731"}],"tier":"poc_unverified"},"has_fix":true,"headline":"snapd could be made to escalate privileges and run programs as administrator","id":"CVE-2021-44731","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora"],"type":"race_condition","year":"2021"},"n_packages":0,"n_references":10,"next":{"headline":"Use after free in n/a","id":"CVE-2021-44732"},"packages":[],"prev":{"headline":"snapd could be made to escalate privileges and run programs as administrator","id":"CVE-2021-44730"},"products":["snapd"],"published":"2022-02-17","related":[{"cvss_score":10,"headline":"Command injection in snapd","id":"CVE-2023-1523","kev_date_added":null,"published":"2023-09-01"},{"cvss_score":9.3,"headline":"Privilege escalation in snapd","id":"CVE-2020-27352","kev_date_added":null,"published":"2024-06-21"},{"cvss_score":8.8,"headline":"Local privilege escalation via snapd socket","id":"CVE-2019-7304","kev_date_added":null,"published":"2019-04-23"},{"cvss_score":8.2,"headline":"snapd could be made to bypass intended access restrictions through snap content interfaces and layout paths","id":"CVE-2021-4120","kev_date_added":null,"published":"2022-02-17"},{"cvss_score":8.1,"headline":"CVE-2024-5138: snapd snapctl auth bypass","id":"CVE-2024-5138","kev_date_added":null,"published":"2024-05-31"},{"cvss_score":7.8,"headline":"snapd Race Condition vulnerability","id":"CVE-2022-3328","kev_date_added":null,"published":"2024-01-08"},{"cvss_score":7.8,"headline":"snapd could be made to escalate privileges and run programs as administrator","id":"CVE-2021-44730","kev_date_added":null,"published":"2022-02-17"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["Canonical Ltd."]},"summary":"A race condition in snapd allows local attackers to gain root privileges by manipulating mount namespaces to execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2021-44731/"}