CVE-2012-5671 (GCVE-0-2012-5671)

Vulnerability from cvelistv5 – Published: 2012-10-31 16:00 – Updated: 2024-08-06 21:14
VLAI
Summary
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
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2267 records in the last 180 days details
References
URL Tags
http://secunia.com/advisories/51115 third-party-advisoryx_refsource_SECUNIA
http://www.openwall.com/lists/oss-security/2012/10/26/5 mailing-listx_refsource_MLIST
http://secunia.com/advisories/51155 third-party-advisoryx_refsource_SECUNIA
https://lists.exim.org/lurker/message/20121026.08… mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/USN-1618-1 vendor-advisoryx_refsource_UBUNTU
http://secunia.com/advisories/51098 third-party-advisoryx_refsource_SECUNIA
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://secunia.com/advisories/51153 third-party-advisoryx_refsource_SECUNIA
http://osvdb.org/86616 vdb-entryx_refsource_OSVDB
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/56285 vdb-entryx_refsource_BID
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://www.debian.org/security/2012/dsa-2566 vendor-advisoryx_refsource_DEBIAN
Date Public
2012-10-26 00:00
Show details on NVD website
To clipboard 

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          "url": "http://www.openwall.com/lists/oss-security/2012/10/26/5"
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        {
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      "sourceIdentifier": "cve@mitre.org",
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          },
          {
            "lang": "es",
            "value": "Desbordamiento de b\u00fafer basado en memoria din\u00e1mica en la funci\u00f3n dkim_exim_query_dns_txt en dkim.c en Exim v4.70 hasta v4.80, cuando el soporte DKIM est\u00e1 habilitado y acl_smtp_connect y acl_smtp_rcpt no est\u00e1n establecidos en \"warn control = dkim_disable_verify\", permite a atacantes remotos ejecutar c\u00f3digo arbitrario a trav\u00e9s de un correo electr\u00f3nico de un servidor DNS malicioso."
          }
        ],
        "id": "CVE-2012-5671",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
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              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
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                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
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              "userInteractionRequired": false
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        "published": "2012-10-31T16:55:06.577",
        "references": [
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            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091664.html"
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          {
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        "sourceIdentifier": "cve@mitre.org",
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    },
    "redhat_vex": {
      "aggregate_severity": "Critical",
      "current_release_date": "2025-11-21T12:49:27+00:00",
      "cve": "CVE-2012-5671",
      "id": "CVE-2012-5671",
      "initial_release_date": "2012-10-26T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "exim: Heap-buffer overflow in DNS decode logic used for DKIM",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-5671.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2025-03-16T13:48:33Z",
      "cve": "CVE-2012-5671",
      "id": "CVE-2012-5671",
      "initial_release_date": "2023-02-15T05:43:25Z",
      "product_status:recommended": "3",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2012-5671",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2012-5671.json",
      "version": "6"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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Vulnerability timeline

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