usn-7731-1
Vulnerability from osv_ubuntu
Published
2025-09-02 19:13
Modified
2026-02-10 04:49
Summary
kmail vulnerabilities
Details

Damian Poddebniak, Christian Dresen, Jens Müller, Fabian Ising, Sebastian Schinzel, Simon Friedberger, Juraj Somorovsky, and Jörg Schwenk discovered that KMail could be made to leak the plaintext of S/MIME encrypted emails when retrieving external content in emails. Under certain configurations, if a user were tricked into opening a specially crafted email, an attacker could possibly use this issue to obtain the plaintext of an encrypted email. This update mitigates the issue by preventing KMail from automatically loading external content. This issue only affected Ubuntu 18.04 LTS. (CVE-2017-17689)

It was discovered that KMail could be made to attach files to an email without the user's knowledge. If a user were tricked into sending an email created by a specially crafted "mailto" link, an attacker could possibly use this issue to obtain sensitive files. (CVE-2020-11880)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-17689",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-11880",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmail",
            "binary_version": "4:17.12.3-0ubuntu1+esm1"
          },
          {
            "binary_name": "ktnef",
            "binary_version": "4:17.12.3-0ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "kmail",
        "purl": "pkg:deb/ubuntu/kmail@4:17.12.3-0ubuntu1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4:17.12.3-0ubuntu1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4:17.04.3-0ubuntu1",
        "4:17.08.3-0ubuntu1",
        "4:17.08.3-0ubuntu2",
        "4:17.12.2-0ubuntu1",
        "4:17.12.3-0ubuntu1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-11880",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "kmail",
            "binary_version": "4:19.12.3-0ubuntu1+esm1"
          },
          {
            "binary_name": "ktnef",
            "binary_version": "4:19.12.3-0ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "kmail",
        "purl": "pkg:deb/ubuntu/kmail@4:19.12.3-0ubuntu1+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4:19.12.3-0ubuntu1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4:19.04.3-0ubuntu2",
        "4:19.04.3-0ubuntu3",
        "4:19.12.3-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Damian Poddebniak, Christian Dresen, Jens M\u00fcller, Fabian Ising,\nSebastian Schinzel, Simon Friedberger, Juraj Somorovsky, and J\u00f6rg\nSchwenk discovered that KMail could be made to leak the plaintext\nof S/MIME encrypted emails when retrieving external content in emails.\nUnder certain configurations, if a user were tricked into opening a\nspecially crafted email, an attacker could possibly use this issue to\nobtain the plaintext of an encrypted email. This update mitigates the\nissue by preventing KMail from automatically loading external content.\nThis issue only affected Ubuntu 18.04 LTS. (CVE-2017-17689)\n\nIt was discovered that KMail could be made to attach files to an email\nwithout the user\u0027s knowledge. If a user were tricked into sending an\nemail created by a specially crafted \"mailto\" link, an attacker could\npossibly use this issue to obtain sensitive files. (CVE-2020-11880)",
  "id": "USN-7731-1",
  "modified": "2026-02-10T04:49:48Z",
  "published": "2025-09-02T19:13:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7731-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17689"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11880"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "kmail vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2017-17689",
    "UBUNTU-CVE-2020-11880"
  ]
}



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