ubuntu-cve-2017-17843
Vulnerability from osv_ubuntu
Published
2017-12-27 17:08
Modified
2025-07-16 04:53
Summary
Details

An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "enigmail",
            "binary_version": "2:1.9.9-0ubuntu0.14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "enigmail",
        "purl": "pkg:deb/ubuntu/enigmail@2:1.9.9-0ubuntu0.14.04.1?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.9-0ubuntu0.14.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.5.2-0ubuntu1",
        "2:1.7-0ubuntu0.14.04.1",
        "2:1.7.2-0ubuntu0.14.04.1",
        "2:1.8.2-0ubuntu0.14.04.1",
        "2:1.9.7-0ubuntu0.14.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "enigmail",
            "binary_version": "2:1.9.9-0ubuntu0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "enigmail",
        "purl": "pkg:deb/ubuntu/enigmail@2:1.9.9-0ubuntu0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.9.9-0ubuntu0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:1.8.2-0ubuntu1",
        "2:1.8.2-4fakesync1",
        "2:1.9.1-1",
        "2:1.9.7-1~ubuntu0.16.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in Enigmail before 1.9.9 that allows remote attackers to trigger use of an intended public key for encryption, because incorrect regular expressions are used for extraction of an e-mail address from a comma-separated list, as demonstrated by a modified Full Name field and a homograph attack, aka TBE-01-002.",
  "id": "UBUNTU-CVE-2017-17843",
  "modified": "2025-07-16T04:53:13Z",
  "published": "2017-12-27T17:08:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17843"
    },
    {
      "type": "REPORT",
      "url": "https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf"
    },
    {
      "type": "REPORT",
      "url": "https://lists.debian.org/debian-security-announce/2017/msg00333.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.debian.org/security/2017/dsa-4070"
    },
    {
      "type": "REPORT",
      "url": "https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-17843"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-17843"
  ]
}



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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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.