{"answers":{"affected":"2 open source packages ship an affected version, including nokogiri. It affects 1 product.","exploited":"There is no known exploitation of CVE-2017-18258 in the wild and no public exploit code.","fix":"Upgrade nokogiri to 1.8.2 or later.","what":"CVE-2017-18258 is a medium-severity denial of service vulnerability in Xmlsoft Libxml2, published on 8 Apr 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2017-18258 and fix it if it is affected.\n\nWhat it is: CVE-2017-18258 is a medium-severity denial of service vulnerability in Xmlsoft Libxml2, published on 8 Apr 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2017-18258 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- nokogiri (RubyGems): affected all versions; fixed in 1.8.2\n- nokogiri (RubyGems): affected all versions; fixed in 1.8.2\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-2017-18258/ (Markdown: https://insights.sbomify.com/CVE-2017-18258/index.md)","id":"CVE-2017-18258","markdown":"https://insights.sbomify.com/CVE-2017-18258/index.md","name":"CVE-2017-18258","record":{"aliases":["DEBIAN-CVE-2017-18258","ECHO-3a2b-e3e4-77ce","GHSA-882p-jqgm-f45g","UBUNTU-CVE-2017-18258"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"XML parsing library","requires_auth":"none","summary":"Remote attackers can cause denial of service via memory consumption in libxml2 by submitting crafted LZMA files.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"libxml2","vendor":"xmlsoft"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.","ecosystems":["RubyGems"],"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":"Uncontrolled resource consumption in nokogiri","id":"CVE-2017-18258","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"xmlsoft:libxml2","products":["xmlsoft:libxml2"],"type":"denial_of_service","year":"2017"},"n_packages":2,"n_references":6,"next":{"headline":"Dolibarr ERP and CRM contain XSS Vulnerability","id":"CVE-2017-18259"},"packages":[{"ecosystem":"RubyGems","fixed":["1.8.2"],"introduced":["0"],"last_affected":[],"package":"nokogiri","purl":null,"source":"GHSA-882p-jqgm-f45g"},{"ecosystem":"RubyGems","fixed":["1.8.2"],"introduced":["0"],"last_affected":[],"package":"nokogiri","purl":"pkg:gem/nokogiri","source":"GHSA-882p-jqgm-f45g"}],"prev":{"headline":"Integer overflow in n/a","id":"CVE-2017-18257"},"products":["n/a"],"published":"2018-04-08","related":[{"cvss_score":9.8,"headline":"XML external entity in n/a","id":"CVE-2017-16931","kev_date_added":null,"published":"2017-11-23"},{"cvss_score":9.1,"headline":"Information disclosure in n/a","id":"CVE-2017-8872","kev_date_added":null,"published":"2017-05-10"},{"cvss_score":8.1,"headline":"Use after free in libxml2","id":"CVE-2022-49043","kev_date_added":null,"published":"2025-01-26"},{"cvss_score":8,"headline":"Memory corruption in libxml2","id":"CVE-2026-86140","kev_date_added":null,"published":"2026-09-05"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2024-34459","kev_date_added":null,"published":"2024-05-13"},{"cvss_score":7.5,"headline":"Use after free in n/a","id":"CVE-2024-25062","kev_date_added":null,"published":"2024-02-04"},{"cvss_score":7.5,"headline":"Nokogiri gem, via libxml, is affected by DoS vulnerabilities","id":"CVE-2017-16932","kev_date_added":null,"published":"2017-11-23"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-14","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service via memory consumption in libxml2 by submitting crafted LZMA files.","url":"https://insights.sbomify.com/CVE-2017-18258/"}