{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2018-16839 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-16839 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 31 Oct 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-2018-16839 and fix it if it is affected.\n\nWhat it is: CVE-2018-16839 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 31 Oct 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-2018-16839 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-2018-16839/ (Markdown: https://insights.sbomify.com/CVE-2018-16839/index.md)","id":"CVE-2018-16839","markdown":"https://insights.sbomify.com/CVE-2018-16839/index.md","name":"CVE-2018-16839","record":{"aliases":["ALPINE-CVE-2018-16839","CLEANSTART-2026-JA50765","CURL-CVE-2018-16839","DEBIAN-CVE-2018-16839","GHSA-g54v-fj63-pm34","SUSE-SU-2019:0996-1","UBUNTU-CVE-2018-16839"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"curl library","requires_auth":"none","summary":"A buffer overrun in the SASL authentication code of the curl library allows attackers to cause a denial of service.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"curl","vendor":"haxx"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"},{"id":"CWE-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.","ecosystems":["SUSE:Enterprise Storage 4","SUSE:Linux Enterprise Desktop 12 SP3","SUSE:Linux Enterprise Server 12 SP1-LTSS","SUSE:Linux Enterprise Server 12 SP2-BCL","SUSE:Linux Enterprise Server 12 SP2-LTSS","SUSE:Linux Enterprise Server 12 SP3","SUSE:Linux Enterprise Server 12-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP1","SUSE:Linux Enterprise Server for SAP Applications 12 SP2","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Software Development Kit 12 SP3","SUSE:OpenStack Cloud 7"],"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":"Memory corruption in curl:","id":"CVE-2018-16839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","haxx:curl"],"type":"memory_corruption","year":"2018"},"n_packages":12,"n_references":9,"next":{"headline":"Use after free in curl","id":"CVE-2018-16840"},"packages":[{"ecosystem":"SUSE:Enterprise Storage 4","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Enterprise%20Storage%204","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP3","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP1-LTSS","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2-BCL","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2-LTSS","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12-LTSS","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP1","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP2","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP3","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3","source":"SUSE-SU-2019:0996-1"},{"ecosystem":"SUSE:OpenStack Cloud 7","fixed":["7.37.0-37.37.1"],"introduced":["0"],"last_affected":[],"package":"curl","purl":"pkg:rpm/suse/curl\u0026distro=SUSE%20OpenStack%20Cloud%207","source":"SUSE-SU-2019:0996-1"}],"prev":{"headline":"Auth bypass in sssd","id":"CVE-2018-16838"},"products":["curl:"],"published":"2018-10-31","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":"SUSE"},{"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":"2026-04-15","vendors":["The Curl Project"]},"summary":"A buffer overrun in the SASL authentication code of the curl library allows attackers to cause a denial of service.","url":"https://insights.sbomify.com/CVE-2018-16839/"}