{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2012-3955 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2012-3955 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 14 Sep 2012. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2012-3955 and fix it if it is affected.\n\nWhat it is: CVE-2012-3955 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 14 Sep 2012. 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-2012-3955 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-2012-3955/ (Markdown: https://insights.sbomify.com/CVE-2012-3955/index.md)","id":"CVE-2012-3955","markdown":"https://insights.sbomify.com/CVE-2012-3955/index.md","name":"CVE-2012-3955","record":{"aliases":["DEBIAN-CVE-2012-3955","DSA-2551-1","GHSA-6xcv-87wr-7rfm","RHSA-2013:0504"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"ISC DHCP server","requires_auth":"none","summary":"Remote attackers can crash the ISC DHCP daemon by exploiting IPv6 lease expiration logic, requiring specific lease time configurations.","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":7.1,"severity":"high","source":"nvd","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","version":"2.0"},"cwes":[],"description":"ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.","ecosystems":["Red Hat:enterprise_linux:6::client","Red Hat:enterprise_linux:6::computenode","Red Hat:enterprise_linux:6::server","Red Hat:enterprise_linux:6::workstation"],"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-2012-3955","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":"2012"},"n_packages":20,"n_references":16,"next":{"headline":"Use after free in n/a","id":"CVE-2012-3956"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::client","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::computenode","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::server","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhclient","purl":"pkg:rpm/redhat/dhclient","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp","purl":"pkg:rpm/redhat/dhcp","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-common","purl":"pkg:rpm/redhat/dhcp-common","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-debuginfo","purl":"pkg:rpm/redhat/dhcp-debuginfo","source":"RHSA-2013:0504"},{"ecosystem":"Red Hat:enterprise_linux:6::workstation","fixed":["12:4.1.1-34.P1.el6"],"introduced":["0"],"last_affected":[],"package":"dhcp-devel","purl":"pkg:rpm/redhat/dhcp-devel","source":"RHSA-2013:0504"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2012-3954"},"products":["n/a"],"published":"2012-09-14","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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-06","vendors":["n/a"]},"summary":"Remote attackers can crash the ISC DHCP daemon by exploiting IPv6 lease expiration logic, requiring specific lease time configurations.","url":"https://insights.sbomify.com/CVE-2012-3955/"}