{"answers":{"affected":"It affects 10 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4862 exists.","fix":"Apply the vendor's patch.","what":"CVE-2011-4862 is a critical memory corruption vulnerability in Debian Debian Linux, published on 25 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2011-4862 and fix it if it is affected.\n\nWhat it is: CVE-2011-4862 is a critical memory corruption vulnerability in Debian Debian Linux, published on 25 Dec 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4862 exists.\n\nAffected product: Debian Debian 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-2011-4862/ (Markdown: https://insights.sbomify.com/CVE-2011-4862/index.md)","id":"CVE-2011-4862","markdown":"https://insights.sbomify.com/CVE-2011-4862/index.md","name":"CVE-2011-4862","record":{"aliases":["DEBIAN-CVE-2011-4862","DSA-2372-1","DSA-2373-1","DSA-2375-1","GHSA-x8cr-m6vm-pqh4","RHSA-2011:1851","RHSA-2011:1852","RHSA-2011:1853","RHSA-2011:1854"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Telnet daemon","requires_auth":"none","summary":"Remote attackers can execute arbitrary code via a buffer overflow in the telnetd encryption key handling, affecting multiple operating systems and Kerberos implementations.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"freebsd","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"freebsd","vendor":"freebsd"},{"product":"inetutils","vendor":"gnu"},{"product":"heimdal","vendor":"heimdal_project"},{"product":"krb5-appl","vendor":"mit"},{"product":"opensuse","vendor":"opensuse"},{"product":"linux_enterprise_desktop","vendor":"suse"},{"product":"linux_enterprise_server","vendor":"suse"},{"product":"linux_enterprise_software_development_kit","vendor":"suse"}],"cvss":{"score":10,"severity":"critical","source":"nvd","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","version":"2.0"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.","ecosystems":["Red Hat:enterprise_linux:4::as","Red Hat:enterprise_linux:4::desktop","Red Hat:enterprise_linux:4::es","Red Hat:enterprise_linux:4::ws","Red Hat:enterprise_linux:5::client","Red Hat:enterprise_linux:5::client_workstation","Red Hat:enterprise_linux:5::server","Red Hat:enterprise_linux:6::client","Red Hat:enterprise_linux:6::computenode","Red Hat:enterprise_linux:6::server","Red Hat:enterprise_linux:6::workstation","Red Hat:rhel_els:3::as","Red Hat:rhel_els:3::es","Red Hat:rhel_eus:5.6","Red Hat:rhel_eus:6.0","Red Hat:rhel_eus:6.1","Red Hat:rhel_mission_critical:5.3"],"exploits":{"exploitdb":3,"first_seen":"2011-12-23","github_poc":3,"max_poc_stars":5,"metasploit":3,"nuclei":0,"refs":[{"date":"2017-02-02T18:12:56Z","kind":"github_poc","ref":"https://github.com/hdbreaker/GO-CVE-2011-4862","stars":5,"title":"Go Exploit for CVE-2011-4862"},{"date":"2020-02-06T09:30:45Z","kind":"github_poc","ref":"https://github.com/appsecrani/CVE-2011-4862","stars":1,"title":"Final Project for Security and Privacy CS 600.443"},{"date":"2011-12-23","kind":"metasploit","ref":"exploit/freebsd/telnet/telnet_encrypt_keyid","stars":null,"title":"FreeBSD Telnet Service Encryption Key ID Buffer Overflow"},{"date":"2011-12-23","kind":"metasploit","ref":"exploit/linux/telnet/telnet_encrypt_keyid","stars":null,"title":"Linux BSD-derived Telnet Service Encryption Key ID Buffer Overflow"},{"date":"2011-12-26","kind":"exploitdb","ref":"18280","stars":null,"title":"TelnetD encrypt_keyid - Function Pointer Overwrite"},{"date":"2012-01-14","kind":"exploitdb","ref":"18368","stars":null,"title":"Linux BSD-derived Telnet Service Encryption Key ID - Remote Buffer Overflow (Metasploit)"},{"date":"2012-01-14","kind":"exploitdb","ref":"18369","stars":null,"title":"FreeBSD - Telnet Service Encryption Key ID Buffer Overflow (Metasploit)"},{"date":"2018-11-28T21:13:05Z","kind":"github_poc","ref":"https://github.com/lol-fi/cve-2011-4862","stars":0,"title":null}],"tier":"weaponised"},"has_fix":true,"headline":"Memory corruption in n/a","id":"CVE-2011-4862","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","freebsd:freebsd","opensuse:opensuse","suse:linux_enterprise_desktop","suse:linux_enterprise_server","suse:linux_enterprise_software_development_kit"],"type":"memory_corruption","year":"2011"},"n_packages":89,"n_references":42,"next":{"headline":"Missing authorization in n/a","id":"CVE-2011-4863"},"packages":[{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::as","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::desktop","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::es","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:4::ws","fixed":["0:1.3.4-65.el4"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::client_workstation","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-server-ldap","purl":"pkg:rpm/redhat/krb5-server-ldap","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-debuginfo","purl":"pkg:rpm/redhat/krb5-debuginfo","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-server-ldap","purl":"pkg:rpm/redhat/krb5-server-ldap","source":"RHSA-2011:1851"},{"ecosystem":"Red Hat:enterprise_linux:5::server","fixed":["0:1.6.1-63.el5_7"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2011:1851"}],"prev":{"headline":"Missing authorization in n/a","id":"CVE-2011-4861"},"products":["n/a"],"published":"2011-12-25","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-07","vendors":["n/a"]},"summary":"Remote attackers can execute arbitrary code via a buffer overflow in the telnetd encryption key handling, affecting multiple operating systems and Kerberos implementations.","url":"https://insights.sbomify.com/CVE-2011-4862/"}