{"id":"CVE-2012-5671","aliases":["DEBIAN-CVE-2012-5671","DSA-2566-1","EUVD-2012-5554","GHSA-9mj7-g6p8-v73f","openSUSE-SU-2024:10017-1"],"status":"published","title":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through...","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.08382,"percentile":0.95009,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2012-10-26T00:00:00Z","modified":"2026-10-23T17:47:36Z","fixes":[{"ecosystem":"Debian:12","package":"exim4","fixed_in":["4.80-5.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"exim4","fixed_in":["4.80-5.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"exim4","fixed_in":["4.80-5.1"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"exim4","fixed_in":["4.72-6+squeeze3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.80-5.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.80-5.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.80-5.1"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"exim4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.72-6+squeeze3"}]}],"versions":["4.72-6","4.72-6+squeeze1","4.72-6+squeeze1~bpo50+1","4.72-6+squeeze2","4.72-6+squeeze2~bpo50+1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"exim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.86.2-2.2"}]}],"bundled":11}],"products":[{"vendor":"exim","product":"exim"}],"references":[{"url":"http://secunia.com/advisories/51115","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2012/10/26/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://secunia.com/advisories/51155","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"https://lists.exim.org/lurker/message/20121026.080330.74b9147b.en.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-1618-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/51098","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090900.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090963.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://secunia.com/advisories/51153","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://osvdb.org/86616","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00018.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/56285","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/79615","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091664.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.debian.org/security/2012/dsa-2566","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-5671"},{"url":"https://github.com/advisories/GHSA-9mj7-g6p8-v73f"},{"url":"https://security-tracker.debian.org/tracker/CVE-2012-5671","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2010-2023","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-2024","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-4344","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2010-4345","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-0017","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1407","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1764","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5671","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-2957","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-2972","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1531","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2012-5671","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2012-10-31T16:00:00Z","modified":"2024-08-06T21:14:16.438Z","updated_at":"2026-11-02T14:34:49.600255Z"}],"euvd":[{"id":"EUVD-2012-5554","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2012-10-31T16:00:00Z","modified":"2024-08-06T21:14:16Z","updated_at":"2026-11-03T01:56:04.024018Z"}],"ghsa":[{"id":"GHSA-9mj7-g6p8-v73f","title":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through...","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2022-05-17T01:39:17Z","modified":"2023-02-03T05:04:54Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:53:38.626767Z"}],"nvd":[{"id":"CVE-2012-5671","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2012-10-31T16:55:06.577Z","modified":"2026-06-16T23:47:13.503Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:16.536025Z"}],"osv":[{"id":"CVE-2012-5671","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2012-10-31T16:55:06Z","modified":"2026-04-10T03:42:34.636253Z","updated_at":"2026-11-02T15:43:58.802805Z"},{"id":"DEBIAN-CVE-2012-5671","description":"Heap-based buffer overflow in the dkim_exim_query_dns_txt function in dkim.c in Exim 4.70 through 4.80, when DKIM support is enabled and acl_smtp_connect and acl_smtp_rcpt are not set to \"warn control = dkim_disable_verify,\" allows remote attackers to execute arbitrary code via an email from a malicious DNS server.","status":"published","published":"2012-10-31T16:55:06.577Z","modified":"2026-10-23T17:47:36.023653224Z","updated_at":"2026-11-02T15:45:25.218101Z"},{"id":"DSA-2566-1","title":"exim4 - heap overflow","status":"published","published":"2012-10-26T00:00:00Z","modified":"2026-03-09T01:19:17.378526Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"openSUSE-SU-2024:10017-1","title":"exim-4.86.2-2.2 on GA media","description":"These are all security issues fixed in the exim-4.86.2-2.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:35.501293Z","updated_at":"2026-11-02T16:58:33.135986Z"}]}}