{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2016-2774 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2016-2774 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 9 Mar 2016. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2016-2774 and fix it if it is affected.\n\nWhat it is: CVE-2016-2774 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 9 Mar 2016. 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-2016-2774 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-2016-2774/ (Markdown: https://insights.sbomify.com/CVE-2016-2774/index.md)","id":"CVE-2016-2774","markdown":"https://insights.sbomify.com/CVE-2016-2774/index.md","name":"CVE-2016-2774","record":{"aliases":["DEBIAN-CVE-2016-2774","DLA-2003-1","GHSA-rg7r-5jqm-6r7j","RHSA-2016:2590","SUSE-SU-2016:1692-1","SUSE-SU-2016:1735-1","SUSE-SU-2016:1791-1","SUSE-SU-2016:2024-1","UBUNTU-CVE-2016-2774"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ISC DHCP server","requires_auth":"none","summary":"Remote attackers can cause a denial of service in ISC DHCP by establishing excessive concurrent TCP sessions, leading to assertion failures or outages.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"dhcp","vendor":"isc"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.","ecosystems":["Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation","SUSE:Linux Enterprise Desktop 12","SUSE:Linux Enterprise Desktop 12 SP1","SUSE:Linux Enterprise Point of Sale 11 SP3","SUSE:Linux Enterprise Server 11 SP2-LTSS","SUSE:Linux Enterprise Server 11 SP3-LTSS","SUSE:Linux Enterprise Server 11 SP3-TERADATA","SUSE:Linux Enterprise Server 11 SP4","SUSE:Linux Enterprise Server 12","SUSE:Linux Enterprise Server 12 SP1","SUSE:Linux Enterprise Server for SAP Applications 11 SP4","SUSE:Linux Enterprise Server for SAP Applications 12","SUSE:Linux Enterprise Server for SAP Applications 12 SP1","SUSE:Linux Enterprise Software Development Kit 11 SP4","SUSE:Linux Enterprise Software Development Kit 12","SUSE:Linux Enterprise Software Development Kit 12 SP1","SUSE:Manager 2.1","SUSE:Manager Proxy 2.1","SUSE:OpenStack Cloud 5"],"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 n/a","id":"CVE-2016-2774","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"canonical:ubuntu_linux","products":["canonical:ubuntu_linux","debian:debian_linux"],"type":"denial_of_service","year":"2016"},"n_packages":42,"n_references":10,"next":{"headline":"Denial of service in n/a","id":"CVE-2016-2775"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-libs","purl":"pkg:rpm/redhat/dhcp-libs","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-libs","purl":"pkg:rpm/redhat/dhcp-libs","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2016:2590"},{"ecosystem":"Red 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Hat:enterprise_linux:7::workstation","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2016:2590"},{"ecosystem":"Red Hat:enterprise_linux:7::workstation","fixed":["12:4.2.5-47.el7"],"introduced":["0"],"last_affected":[],"package":"dhcp-libs","purl":"pkg:rpm/redhat/dhcp-libs","source":"RHSA-2016:2590"},{"ecosystem":"SUSE:Linux Enterprise Desktop 12","fixed":["4.2.6-14.6.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012","source":"SUSE-SU-2016:1692-1"},{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP1","fixed":["4.3.3-9.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1","source":"SUSE-SU-2016:1791-1"},{"ecosystem":"SUSE:Linux Enterprise Point of Sale 11 SP3","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP2-LTSS","fixed":["4.2.4.P2-0.11.15.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSS","source":"SUSE-SU-2016:1735-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP3-LTSS","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSS","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP3-TERADATA","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATA","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12","fixed":["4.2.6-14.6.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012","source":"SUSE-SU-2016:1692-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP1","fixed":["4.3.3-9.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1","source":"SUSE-SU-2016:1791-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12","fixed":["4.2.6-14.6.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012","source":"SUSE-SU-2016:1692-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP1","fixed":["4.3.3-9.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1","source":"SUSE-SU-2016:1791-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 11 SP4","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4","source":"SUSE-SU-2016:2024-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12","fixed":["4.2.6-14.6.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012","source":"SUSE-SU-2016:1692-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP1","fixed":["4.3.3-9.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1","source":"SUSE-SU-2016:1791-1"},{"ecosystem":"SUSE:Manager 2.1","fixed":["4.2.4.P2-0.27.1"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/suse/dhcp\u0026distro=SUSE%20Manager%202.1","source":"SUSE-SU-2016:2024-1"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2016-2773"},"products":["n/a"],"published":"2016-03-09","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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Remote attackers can cause a denial of service in ISC DHCP by establishing excessive concurrent TCP sessions, leading to assertion failures or outages.","url":"https://insights.sbomify.com/CVE-2016-2774/"}