{"id":"CVE-2003-0540","aliases":["DEBIAN-CVE-2003-0540","DSA-363","EUVD-2003-0534","GHSA-cgrr-3rc7-3h4r"],"status":"published","title":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial...","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.21261,"percentile":0.97611,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"published":"2003-08-03T00:00:00Z","modified":"2026-10-22T23:47:24Z","exploits":[{"source":"exploitdb","id":"EDB-22981","title":"Postfix 1.1.x - Denial of Service (1)","type":"dos","platform":"linux","date":"2003-08-04","verified":true,"url":"https://www.exploit-db.com/exploits/22981"},{"source":"exploitdb","id":"EDB-22982","title":"Postfix 1.1.x - Denial of Service (2)","type":"dos","platform":"linux","date":"2003-08-04","verified":true,"url":"https://www.exploit-db.com/exploits/22982"}],"fixes":[{"ecosystem":"Debian:12","package":"postfix","fixed_in":["1.1.12"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"postfix","fixed_in":["1.1.12"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"postfix","fixed_in":["1.1.12"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"postfix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.12"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"postfix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.12"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"postfix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.12"}]}]},{"source":"osv","ecosystem":"Debian:3.0","package":"postfix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.11-0.woody3"}]}],"bundled":2}],"products":[{"vendor":"conectiva","product":"linux"},{"vendor":"wietse_venema","product":"postfix"}],"references":[{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000717","tags":["vendor-advisory","x_refsource_CONECTIVA","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/8333","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://lists.grok.org.uk/pipermail/full-disclosure/2003-August/007693.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","web"]},{"url":"http://www.kb.cert.org/vuls/id/895508","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource","web"]},{"url":"http://marc.info/?l=bugtraq\u0026m=106029188614704\u0026w=2","tags":["vendor-advisory","x_refsource_TRUSTIX","x_transferred","web"]},{"url":"http://www.mandriva.com/security/advisories?name=MDKSA-2003:081","tags":["vendor-advisory","x_refsource_MANDRAKE","x_transferred","advisory"]},{"url":"http://www.redhat.com/support/errata/RHSA-2003-251.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.debian.org/security/2003/dsa-363","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://marc.info/?l=bugtraq\u0026m=106001525130257\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"http://www.linuxsecurity.com/advisories/engarde_advisory-3517.html","tags":["vendor-advisory","x_refsource_ENGARDE","x_transferred","advisory"]},{"url":"http://www.novell.com/linux/security/advisories/2003_033_postfix.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A544","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","web"]},{"url":"http://secunia.com/advisories/9433","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-0540"},{"url":"https://github.com/advisories/GHSA-cgrr-3rc7-3h4r"},{"url":"https://security-tracker.debian.org/tracker/CVE-2003-0540","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2003-0540","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2003-08-05T04:00:00Z","modified":"2024-08-08T01:58:10.982Z","updated_at":"2026-11-02T14:20:16.411288Z"}],"euvd":[{"id":"EUVD-2003-0534","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2003-08-05T04:00:00Z","modified":"2024-08-08T01:58:10Z","updated_at":"2026-11-03T01:15:06.866577Z"}],"ghsa":[{"id":"GHSA-cgrr-3rc7-3h4r","title":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial...","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2022-04-29T01:26:35Z","modified":"2023-01-30T05:01:25Z","updated_at":"2026-11-02T14:46:24.524248Z"}],"nvd":[{"id":"CVE-2003-0540","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2003-08-27T04:00:00Z","modified":"2026-06-16T22:02:23.597Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:47.41445Z"}],"osv":[{"id":"CVE-2003-0540","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2003-08-27T04:00:00Z","modified":"2026-04-10T03:35:36.696875Z","updated_at":"2026-11-02T15:43:55.998148Z"},{"id":"DEBIAN-CVE-2003-0540","description":"The address parser code in Postfix 1.1.12 and earlier allows remote attackers to cause a denial of service (lock) via (1) a malformed envelope address to a local host that would generate a bounce and contains the \".!\" string in the MAIL FROM or Errors-To headers, which causes nqmgr to lock up, or (2) via a valid MAIL FROM with a RCPT TO containing a \".!\" string, which causes an instance of the SMTP listener to lock up.","status":"published","published":"2003-08-27T04:00:00Z","modified":"2026-10-22T23:47:24.795597003Z","updated_at":"2026-11-02T15:45:22.55978Z"},{"id":"DSA-363","title":"postfix - denial of service, bounce-scanning","status":"published","published":"2003-08-03T00:00:00Z","modified":"2026-03-09T01:20:59.098559Z","updated_at":"2026-11-02T15:46:16.199525Z"}]}}