{"answers":{"affected":"It affects 11 products.","exploited":"There is no known exploitation of CVE-2020-28196 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2020-28196 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 6 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-28196 and fix it if it is affected.\n\nWhat it is: CVE-2020-28196 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 6 Nov 2020. 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-2020-28196 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. 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-2020-28196/ (Markdown: https://insights.sbomify.com/CVE-2020-28196/index.md)","id":"CVE-2020-28196","markdown":"https://insights.sbomify.com/CVE-2020-28196/index.md","name":"CVE-2020-28196","record":{"aliases":["ALPINE-CVE-2020-28196","CLEANSTART-2024-LQ59066","DEBIAN-CVE-2020-28196","DLA-2437-1","DSA-4795-1","GHSA-2wgw-3mv7-47xf","MGASA-2021-0022","OESA-2021-1026","RHSA-2021:1593","RLSA-2021:1593","SUSE-SU-2020:3375-1","SUSE-SU-2020:3377-1","SUSE-SU-2020:3379-1","UBUNTU-CVE-2020-28196","USN-4635-1","openSUSE-SU-2020:2037-1","openSUSE-SU-2020:2062-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kerberos authentication library","requires_auth":"none","summary":"An attacker can cause a denial of service in MIT Kerberos 5 by sending a specially crafted ASN.1-encoded message that triggers unbounded recursion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"kerberos_5","vendor":"mit"},{"product":"active_iq_unified_manager","vendor":"netapp"},{"product":"cloud_backup","vendor":"netapp"},{"product":"oncommand_insight","vendor":"netapp"},{"product":"oncommand_workflow_automation","vendor":"netapp"},{"product":"snapcenter","vendor":"netapp"},{"product":"communications_cloud_native_core_policy","vendor":"oracle"},{"product":"communications_offline_mediation_controller","vendor":"oracle"},{"product":"communications_pricing_design_center","vendor":"oracle"},{"product":"mysql_server","vendor":"oracle"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.","ecosystems":["Red Hat:enterprise_linux:8::baseos","Rocky Linux:8","SUSE:Enterprise Storage 5","SUSE:HPE Helion OpenStack 8","SUSE:Linux Enterprise High Performance Computing 15-ESPOS","SUSE:Linux Enterprise High Performance Computing 15-LTSS","SUSE:Linux Enterprise Module for Basesystem 15 SP1","SUSE:Linux Enterprise Module for Basesystem 15 SP2","SUSE:Linux Enterprise Module for Server Applications 15 SP1","SUSE:Linux Enterprise Module for Server Applications 15 SP2","SUSE:Linux Enterprise Server 12 SP2-BCL","SUSE:Linux Enterprise Server 12 SP2-LTSS","SUSE:Linux Enterprise Server 12 SP3-BCL","SUSE:Linux Enterprise Server 12 SP3-LTSS","SUSE:Linux Enterprise Server 12 SP4-LTSS","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server 15-LTSS","SUSE:Linux Enterprise Server for SAP Applications 12 SP2","SUSE:Linux Enterprise Server for SAP Applications 12 SP3","SUSE:Linux Enterprise Server for SAP Applications 12 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15","SUSE:Linux Enterprise Software Development Kit 12 SP5","SUSE:OpenStack Cloud 7","SUSE:OpenStack Cloud 8","SUSE:OpenStack Cloud 9","SUSE:OpenStack Cloud Crowbar 8","SUSE:OpenStack Cloud Crowbar 9","openSUSE:Leap 15.1","openSUSE:Leap 15.2"],"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-2020-28196","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","mit:kerberos_5","netapp:active_iq_unified_manager","netapp:cloud_backup","netapp:oncommand_insight","netapp:oncommand_workflow_automation","netapp:snapcenter","oracle:communications_cloud_native_core_policy","oracle:mysql_server"],"type":"denial_of_service","year":"2020"},"n_packages":48,"n_references":14,"next":{"headline":"Memory corruption in n/a","id":"CVE-2020-28198"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-debugsource","purl":"pkg:rpm/redhat/krb5-debugsource","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-devel-debuginfo","purl":"pkg:rpm/redhat/krb5-devel-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-libs-debuginfo","purl":"pkg:rpm/redhat/krb5-libs-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-pkinit","purl":"pkg:rpm/redhat/krb5-pkinit","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-pkinit-debuginfo","purl":"pkg:rpm/redhat/krb5-pkinit-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-server-debuginfo","purl":"pkg:rpm/redhat/krb5-server-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-server-ldap","purl":"pkg:rpm/redhat/krb5-server-ldap","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-server-ldap-debuginfo","purl":"pkg:rpm/redhat/krb5-server-ldap-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation-debuginfo","purl":"pkg:rpm/redhat/krb5-workstation-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"libkadm5","purl":"pkg:rpm/redhat/libkadm5","source":"RHSA-2021:1593"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"libkadm5-debuginfo","purl":"pkg:rpm/redhat/libkadm5-debuginfo","source":"RHSA-2021:1593"},{"ecosystem":"Rocky Linux:8","fixed":["0:1.18.2-8.el8"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/rocky-linux/krb5?distro=rocky-linux-8-4-legacy\u0026epoch=0","source":"RLSA-2021:1593"},{"ecosystem":"SUSE:Enterprise Storage 5","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Enterprise%20Storage%205","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:HPE Helion OpenStack 8","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=HPE%20Helion%20OpenStack%208","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-ESPOS","fixed":["1.15.2-6.12.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS","source":"SUSE-SU-2020:3375-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15-LTSS","fixed":["1.15.2-6.12.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS","source":"SUSE-SU-2020:3375-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","fixed":["1.16.3-3.15.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1","source":"SUSE-SU-2020:3377-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP2","fixed":["1.16.3-3.15.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2","source":"SUSE-SU-2020:3377-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP1","fixed":["1.16.3-3.15.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1","source":"SUSE-SU-2020:3377-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Server Applications 15 SP2","fixed":["1.16.3-3.15.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2","source":"SUSE-SU-2020:3377-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2-BCL","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP2-LTSS","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-BCL","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3-LTSS","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP4-LTSS","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15-LTSS","fixed":["1.15.2-6.12.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS","source":"SUSE-SU-2020:3375-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP2","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15","fixed":["1.15.2-6.12.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015","source":"SUSE-SU-2020:3375-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2020:3379-1"},{"ecosystem":"SUSE:OpenStack Cloud 7","fixed":["1.12.5-40.40.2"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20OpenStack%20Cloud%207","source":"SUSE-SU-2020:3379-1"}],"prev":{"headline":"Integer overflow in n/a","id":"CVE-2020-28194"},"products":["n/a"],"published":"2020-11-06","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["n/a"]},"summary":"An attacker can cause a denial of service in MIT Kerberos 5 by sending a specially crafted ASN.1-encoded message that triggers unbounded recursion.","url":"https://insights.sbomify.com/CVE-2020-28196/"}