{"answers":{"affected":"It affects 5 products.","exploited":"There is no known exploitation of CVE-2020-4067 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-4067 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 29 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-4067 and fix it if it is affected.\n\nWhat it is: CVE-2020-4067 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 29 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-4067 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-2020-4067/ (Markdown: https://insights.sbomify.com/CVE-2020-4067/index.md)","id":"CVE-2020-4067","markdown":"https://insights.sbomify.com/CVE-2020-4067/index.md","name":"CVE-2020-4067","record":{"aliases":["CLEANSTART-2023-MZ92027","DEBIAN-CVE-2020-4067","DLA-2271-1","GHSA-c8r8-8vp5-6gcm","MGASA-2020-0287","UBUNTU-CVE-2020-4067","openSUSE-SU-2020:0937-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"STUN/TURN server","requires_auth":"none","summary":"An attacker can query the coturn server to extract sensitive padding bytes from other client connections, leading to information disclosure.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"coturn","vendor":"coturn_project"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"leap","vendor":"opensuse"}],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-665","name":"Improper Initialization"}],"description":"In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly. There is a leak of information between different client connections. One client (an attacker) could use their connection to intelligently query coturn to get interesting bytes in the padding bytes from the connection of another client. This has been fixed in 4.5.1.3.","ecosystems":["openSUSE:Leap 15.2"],"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":"Improper Initialization in coturn","id":"CVE-2020-4067","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","opensuse:leap"],"type":"information_disclosure","year":"2020"},"n_packages":1,"n_references":9,"next":{"headline":"Heap-based Buffer Overflow in APNSwift","id":"CVE-2020-4068"},"packages":[{"ecosystem":"openSUSE:Leap 15.2","fixed":["4.5.1.3-lp152.2.3.1"],"introduced":["0"],"last_affected":[],"package":"coturn","purl":"pkg:rpm/opensuse/coturn\u0026distro=openSUSE%20Leap%2015.2","source":"openSUSE-SU-2020:0937-1"}],"prev":{"headline":"Command Injection in Limdu trainBatch function","id":"CVE-2020-4066"},"products":["coturn"],"published":"2020-06-29","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":"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":"2024-08-04","vendors":["coturn"]},"summary":"An attacker can query the coturn server to extract sensitive padding bytes from other client connections, leading to information disclosure.","url":"https://insights.sbomify.com/CVE-2020-4067/"}