An issue was discovered in KDE KMail before 19.12.3. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make KMail attach local files to a composed email message without showing a warning to the user, as demonstrated by an attach=.bash_history value.

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7731-1 advisory.

    Damian Poddebniak, Christian Dresen, Jens Mller, Fabian Ising, Sebastian Schinzel, Simon Friedberger,     Juraj Somorovsky, and Jrg 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7729-1 advisory.

    Damian Poddebniak, Christian Dresen, Jens Mller, Fabian Ising, Sebastian Schinzel, Simon Friedberger,     Juraj Somorovsky, and Jrg Schwenk discovered that the KMail application of KDE PIM 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. (CVE-2017-17689)

    Jens Mller, Marcus Brinkmann, Damian Poddebniak, Sebastian Schinzel, and Jrg Schwenk discovered that     the KMail application of KDE PIM could be made to leak the plaintext of S/MIME or PGP encrypted emails. If     a user were tricked into replying to a specially crafted email, an attacker could possibly use this issue     to obtain the plaintext of an encrypted email. (CVE-2019-10732)

    It was discovered that the KMail application of KDE PIM 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. This update mitigates the issue     by displaying a warning to the user when files are attached in this way. (CVE-2020-11880)

    It was discovered that the Account Wizard application of KDE PIM used HTTP rather than HTTPS when     retrieving certain email server configurations. An attacker could possibly use this issue to cause email     clients to use an attacker-controlled email server. This issue only affected Ubuntu 16.04 LTS.
    (CVE-2024-50624)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
261431	Ubuntu 18.04 LTS / 20.04 LTS : KMail vulnerabilities (USN-7731-1)	Nessus	Ubuntu Local Security Checks	medium
261427	Ubuntu 14.04 LTS / 16.04 LTS : KDE PIM vulnerabilities (USN-7729-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2020-11880

medium

Tenable Plugins

medium

medium