{"id":"CVE-2005-0021","details":"Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, which triggers an overflow in the host_aton function, or (2) the -bh command line option or dnsdb PTR lookup, which triggers an overflow in the dns_build_reverse function.","modified":"2026-04-10T03:36:48.031307Z","published":"2005-05-02T04:00:00Z","references":[{"type":"ADVISORY","url":"http://security.gentoo.org/glsa/glsa-200501-23.xml"},{"type":"ADVISORY","url":"http://www.debian.org/security/2005/dsa-635"},{"type":"ADVISORY","url":"http://www.debian.org/security/2005/dsa-637"},{"type":"ADVISORY","url":"http://www.idefense.com/application/poi/display?id=179&type=vulnerabilities"},{"type":"ADVISORY","url":"http://www.idefense.com/application/poi/display?id=183&type=vulnerabilities"},{"type":"EVIDENCE","url":"http://www.idefense.com/application/poi/display?id=183&type=vulnerabilities"},{"type":"FIX","url":"http://www.kb.cert.org/vuls/id/132992"},{"type":"FIX","url":"http://www.redhat.com/support/errata/RHSA-2005-025.html"},{"type":"WEB","url":"http://ftp6.us.freebsd.org/pub/mail/exim/ChangeLogs/ChangeLog-4.44"},{"type":"WEB","url":"http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050103/msg00028.html"},{"type":"WEB","url":"http://www.kb.cert.org/vuls/id/132992"},{"type":"WEB","url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10347"}],"schema_version":"1.7.5"}