{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2018-16396 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-16396 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 16 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-16396 and fix it if it is affected.\n\nWhat it is: CVE-2018-16396 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 16 Nov 2018. 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-2018-16396 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-2018-16396/ (Markdown: https://insights.sbomify.com/CVE-2018-16396/index.md)","id":"CVE-2018-16396","markdown":"https://insights.sbomify.com/CVE-2018-16396/index.md","name":"CVE-2018-16396","record":{"aliases":["ALPINE-CVE-2018-16396","CLEANSTART-2026-DW51598","GHSA-xh4x-ph6p-vmxh","RHSA-2020:2839","UBUNTU-CVE-2018-16396"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby programming language","requires_auth":"none","summary":"Ruby fails to taint strings resulting from unpacking tainted data, potentially bypassing security checks in applications relying on taint tracking.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"ruby","vendor":"ruby-lang"}],"cvss":{"score":8.1,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[],"description":"An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.","ecosystems":["Red Hat:rhel_eus:7.6::computenode","Red Hat:rhel_eus:7.6::server"],"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":"Other in n/a","id":"CVE-2018-16396","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","redhat:enterprise_linux","ruby-lang:ruby"],"type":"other","year":"2018"},"n_packages":32,"n_references":16,"next":{"headline":"Path traversal in n/a","id":"CVE-2018-16397"},"packages":[{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby","purl":"pkg:rpm/redhat/ruby","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-debuginfo","purl":"pkg:rpm/redhat/ruby-debuginfo","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-devel","purl":"pkg:rpm/redhat/ruby-devel","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-doc","purl":"pkg:rpm/redhat/ruby-doc","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-irb","purl":"pkg:rpm/redhat/ruby-irb","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-libs","purl":"pkg:rpm/redhat/ruby-libs","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-tcltk","purl":"pkg:rpm/redhat/ruby-tcltk","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:1.2.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-bigdecimal","purl":"pkg:rpm/redhat/rubygem-bigdecimal","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:0.4.2-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-io-console","purl":"pkg:rpm/redhat/rubygem-io-console","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:1.7.7-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-json","purl":"pkg:rpm/redhat/rubygem-json","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:4.3.2-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-minitest","purl":"pkg:rpm/redhat/rubygem-minitest","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-psych","purl":"pkg:rpm/redhat/rubygem-psych","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:0.9.6-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-rake","purl":"pkg:rpm/redhat/rubygem-rake","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:4.0.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-rdoc","purl":"pkg:rpm/redhat/rubygem-rdoc","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.14.1-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygems","purl":"pkg:rpm/redhat/rubygems","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::computenode","fixed":["0:2.0.14.1-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygems-devel","purl":"pkg:rpm/redhat/rubygems-devel","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby","purl":"pkg:rpm/redhat/ruby","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-debuginfo","purl":"pkg:rpm/redhat/ruby-debuginfo","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-devel","purl":"pkg:rpm/redhat/ruby-devel","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-doc","purl":"pkg:rpm/redhat/ruby-doc","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-irb","purl":"pkg:rpm/redhat/ruby-irb","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-libs","purl":"pkg:rpm/redhat/ruby-libs","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0.648-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"ruby-tcltk","purl":"pkg:rpm/redhat/ruby-tcltk","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:1.2.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-bigdecimal","purl":"pkg:rpm/redhat/rubygem-bigdecimal","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:0.4.2-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-io-console","purl":"pkg:rpm/redhat/rubygem-io-console","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:1.7.7-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-json","purl":"pkg:rpm/redhat/rubygem-json","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:4.3.2-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-minitest","purl":"pkg:rpm/redhat/rubygem-minitest","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-psych","purl":"pkg:rpm/redhat/rubygem-psych","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:0.9.6-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-rake","purl":"pkg:rpm/redhat/rubygem-rake","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:4.0.0-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygem-rdoc","purl":"pkg:rpm/redhat/rubygem-rdoc","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.14.1-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygems","purl":"pkg:rpm/redhat/rubygems","source":"RHSA-2020:2839"},{"ecosystem":"Red Hat:rhel_eus:7.6::server","fixed":["0:2.0.14.1-38.el7_6"],"introduced":["0"],"last_affected":[],"package":"rubygems-devel","purl":"pkg:rpm/redhat/rubygems-devel","source":"RHSA-2020:2839"}],"prev":{"headline":"Ruby Openssl Allows Incorrect Value Comparison","id":"CVE-2018-16395"},"products":["n/a"],"published":"2018-11-16","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":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Ruby fails to taint strings resulting from unpacking tainted data, potentially bypassing security checks in applications relying on taint tracking.","url":"https://insights.sbomify.com/CVE-2018-16396/"}