USN-7731-1

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Source
https://ubuntu.com/security/notices/USN-7731-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7731-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-7731-1
Upstream
Related
Published
2025-09-02T19:13:09.303324Z
Modified
2025-09-08T16:42:46Z
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

Affected packages

Ubuntu:Pro:18.04:LTS / kmail

Package

Name
kmail
Purl
pkg:deb/ubuntu/kmail@4:17.12.3-0ubuntu1+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4:17.12.3-0ubuntu1+esm1

Affected versions

4:17.*

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

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"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / kmail

Package

Name
kmail
Purl
pkg:deb/ubuntu/kmail@4:19.12.3-0ubuntu1+esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4:19.12.3-0ubuntu1+esm1

Affected versions

4:19.*

4:19.04.3-0ubuntu2
4:19.04.3-0ubuntu3
4:19.12.3-0ubuntu1

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"
        }
    ]
}