{"answers":{"affected":"It affects 10 products.","exploited":"There is no known exploitation of CVE-2018-16890 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-16890 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 6 Feb 2019. 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-2018-16890 and fix it if it is affected.\n\nWhat it is: CVE-2018-16890 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 6 Feb 2019. 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-2018-16890 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-2018-16890/ (Markdown: https://insights.sbomify.com/CVE-2018-16890/index.md)","id":"CVE-2018-16890","markdown":"https://insights.sbomify.com/CVE-2018-16890/index.md","name":"CVE-2018-16890","record":{"aliases":["ALPINE-CVE-2018-16890","CLEANSTART-2026-OR86338","CURL-CVE-2018-16890","DEBIAN-CVE-2018-16890","GHSA-53fg-3j53-939q","UBUNTU-CVE-2018-16890"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"curl library","requires_auth":"none","summary":"A malicious NTLM server can trigger an integer overflow in libcurl, leading to an out-of-bounds read that may disclose memory or cause a crash.","user_interaction":"required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"big-ip_access_policy_manager","vendor":"f5"},{"product":"libcurl","vendor":"haxx"},{"product":"clustered_data_ontap","vendor":"netapp"},{"product":"communications_operations_monitor","vendor":"oracle"},{"product":"http_server","vendor":"oracle"},{"product":"secure_global_desktop","vendor":"oracle"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"sinema_remote_connect_client","vendor":"siemens"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2020-04-07","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2020-04-07T21:30:58Z","kind":"github_poc","ref":"https://github.com/michelleamesquita/CVE-2018-16890","stars":0,"title":"CVE-2018-16890"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Integer overflow in curl","id":"CVE-2018-16890","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","f5:big-ip_access_policy_manager","haxx:libcurl","netapp:clustered_data_ontap","oracle:http_server","redhat:enterprise_linux"],"type":"integer_overflow","year":"2018"},"n_packages":0,"n_references":12,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2018-16891"},"packages":[],"prev":{"headline":"Information disclosure in ceph","id":"CVE-2018-16889"},"products":["curl"],"published":"2019-02-06","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":"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-15","vendors":["The curl Project"]},"summary":"A malicious NTLM server can trigger an integer overflow in libcurl, leading to an out-of-bounds read that may disclose memory or cause a crash.","url":"https://insights.sbomify.com/CVE-2018-16890/"}