{"id":"CVE-2003-0743","aliases":["DEBIAN-CVE-2003-0743","DSA-376","EUVD-2003-0734","GHSA-gjpp-m73q-mp4j"],"status":"published","title":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before...","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-06","score":0.0565,"percentile":0.93003,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2003-09-04T00:00:00Z","modified":"2026-06-16T22:02:44Z","fixes":[{"ecosystem":"Debian:3.0","package":"exim","fixed_in":["3.35-1woody2"],"sources":["osv"]},{"ecosystem":"Debian:3.0","package":"exim-tls","fixed_in":["3.35-3woody1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:3.0","package":"exim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.35-1woody2"}]}]},{"source":"osv","ecosystem":"Debian:3.0","package":"exim-tls","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.35-3woody1"}]}]}],"products":[{"vendor":"university_of_cambridge","product":"exim"}],"references":[{"url":"http://www.debian.org/security/2003/dsa-376","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Patch","Vendor Advisory"]},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000735","tags":["vendor-advisory","x_refsource_CONECTIVA","x_transferred"]},{"url":"http://www.exim.org/pipermail/exim-users/Week-of-Mon-20030811/057720.html","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.exim.org/pipermail/exim-announce/2003q3/000094.html","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=106252015820395\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://marc.info/?l=vuln-dev\u0026m=106264740820334\u0026w=2","tags":["mailing-list","x_refsource_VULN-DEV","x_transferred"]},{"url":"http://www.exim.org/pipermail/exim-users/Week-of-Mon-20030811/057809.html","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://packages.debian.org/changelogs/pool/main/e/exim/exim_3.36-13/changelog","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://packages.debian.org/changelogs/pool/main/e/exim4/exim4_4.34-10/changelog","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2003-0743"},{"url":"https://github.com/advisories/GHSA-gjpp-m73q-mp4j"}],"sources":{"cve":[{"id":"CVE-2003-0743","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","status":"published","published":"2003-09-06T04:00:00Z","modified":"2024-08-08T02:05:12.644Z","updated_at":"2026-11-02T14:20:16.757505Z"}],"euvd":[{"id":"EUVD-2003-0734","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","status":"published","published":"2003-09-06T04:00:00Z","modified":"2024-08-08T02:05:12Z","updated_at":"2026-11-03T01:15:06.435593Z"}],"ghsa":[{"id":"GHSA-gjpp-m73q-mp4j","title":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before...","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","status":"published","published":"2022-04-29T01:26:55Z","modified":"2023-01-30T05:01:28Z","updated_at":"2026-11-02T14:46:25.069065Z"}],"nvd":[{"id":"CVE-2003-0743","description":"Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the \"(no argument given)\" string is appended to the buffer.","status":"published","published":"2003-10-20T04:00:00Z","modified":"2026-06-16T22:02:44.89Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:47.41445Z"}],"osv":[{"id":"DSA-376","title":"exim - buffer overflow","status":"published","published":"2003-09-04T00:00:00Z","modified":"2026-03-09T01:19:11.601936Z","updated_at":"2026-11-02T15:46:16.523846Z"}]}}