{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-20679 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-20679 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 9 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-20679 and fix it if it is affected.\n\nWhat it is: CVE-2018-20679 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 9 Jan 2019. 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-2018-20679 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-2018-20679/ (Markdown: https://insights.sbomify.com/CVE-2018-20679/index.md)","id":"CVE-2018-20679","markdown":"https://insights.sbomify.com/CVE-2018-20679/index.md","name":"CVE-2018-20679","record":{"aliases":["ALPINE-CVE-2018-20679","DEBIAN-CVE-2018-20679","GHSA-73q8-6p6h-wvfh","UBUNTU-CVE-2018-20679"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"BusyBox DHCP","requires_auth":"none","summary":"A remote attacker can leak sensitive stack information from BusyBox DHCP components by sending a crafted DHCP message.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"busybox","vendor":"busybox"},{"product":"ubuntu_linux","vendor":"canonical"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.","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":"Information disclosure in n/a","id":"CVE-2018-20679","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux"],"type":"information_disclosure","year":"2018"},"n_packages":0,"n_references":7,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-20680"},"packages":[],"prev":{"headline":"LibreNMS SQL Injection","id":"CVE-2018-20678"},"products":["n/a"],"published":"2019-01-09","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2022-48174","kev_date_added":null,"published":"2023-08-22"},{"cvss_score":9.8,"headline":"Memory corruption in busybox","id":"CVE-2021-42377","kev_date_added":null,"published":"2021-11-15"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-2148","kev_date_added":null,"published":"2017-02-09"},{"cvss_score":8.8,"headline":"Command injection in n/a","id":"CVE-2022-28391","kev_date_added":null,"published":"2022-04-03"},{"cvss_score":8.8,"headline":"Code injection in n/a","id":"CVE-2017-16544","kev_date_added":null,"published":"2017-11-20"},{"cvss_score":8,"headline":"Memory corruption in n/a","id":"CVE-2018-1000517","kev_date_added":null,"published":"2018-06-26"},{"cvss_score":7.8,"headline":"Path traversal in n/a","id":"CVE-2023-39810","kev_date_added":null,"published":"2023-08-28"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-06-09","vendors":["n/a"]},"summary":"A remote attacker can leak sensitive stack information from BusyBox DHCP components by sending a crafted DHCP message.","url":"https://insights.sbomify.com/CVE-2018-20679/"}