{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2018-14647 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2018-14647 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 25 Sep 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-2018-14647 and fix it if it is affected.\n\nWhat it is: CVE-2018-14647 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 25 Sep 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-2018-14647 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-2018-14647/ (Markdown: https://insights.sbomify.com/CVE-2018-14647/index.md)","id":"CVE-2018-14647","markdown":"https://insights.sbomify.com/CVE-2018-14647/index.md","name":"CVE-2018-14647","record":{"aliases":["ALPINE-CVE-2018-14647","DEBIAN-CVE-2018-14647","GHSA-gvw2-fvqg-v8mm","PSF-2018-5","SUSE-SU-2018:3156-1","UBUNTU-CVE-2018-14647"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python standard library","requires_auth":"none","summary":"Attackers can cause denial of service in Python applications by sending crafted XML documents that trigger hash collisions in the Expat parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"leap","vendor":"opensuse"},{"product":"python","vendor":"python"},{"product":"enterprise_linux_desktop","vendor":"redhat"},{"product":"enterprise_linux_server","vendor":"redhat"},{"product":"enterprise_linux_workstation","vendor":"redhat"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-909","name":"Missing Initialization of Resource"},{"id":"CWE-665","name":"Improper Initialization"},{"id":"CWE-335","name":"Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)"}],"description":"Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.","ecosystems":["SUSE:Linux Enterprise Server 11 SP4","SUSE:Linux Enterprise Server for SAP Applications 11 SP4","SUSE:Linux Enterprise Software Development Kit 11 SP4"],"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":"Denial of service in Python","id":"CVE-2018-14647","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","opensuse:leap","python:python","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_workstation"],"type":"denial_of_service","year":"2018"},"n_packages":9,"n_references":16,"next":{"headline":"Denial of service in 389-ds-base:","id":"CVE-2018-14648"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["2.6.9-40.21.2"],"introduced":["0"],"last_affected":[],"package":"python","purl":"pkg:rpm/suse/python\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["2.6.9-40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-base","purl":"pkg:rpm/suse/python-base\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["2.6-8.40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-doc","purl":"pkg:rpm/suse/python-doc\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["2.6.9-40.21.2"],"introduced":["0"],"last_affected":[],"package":"python","purl":"pkg:rpm/suse/python\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["2.6.9-40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-base","purl":"pkg:rpm/suse/python-base\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["2.6-8.40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-doc","purl":"pkg:rpm/suse/python-doc\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 11 SP4","fixed":["2.6.9-40.21.2"],"introduced":["0"],"last_affected":[],"package":"python","purl":"pkg:rpm/suse/python\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 11 SP4","fixed":["2.6.9-40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-base","purl":"pkg:rpm/suse/python-base\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4","source":"SUSE-SU-2018:3156-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 11 SP4","fixed":["2.6-8.40.21.1"],"introduced":["0"],"last_affected":[],"package":"python-doc","purl":"pkg:rpm/suse/python-doc\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4","source":"SUSE-SU-2018:3156-1"}],"prev":{"headline":"Null dereference in kernel:","id":"CVE-2018-14646"},"products":["Python"],"published":"2018-09-25","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":"2026-10-07","vendors":["The Python Project"]},"summary":"Attackers can cause denial of service in Python applications by sending crafted XML documents that trigger hash collisions in the Expat parser.","url":"https://insights.sbomify.com/CVE-2018-14647/"}