In KDE KMail 5.2.3, an attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7730-1 advisory.

    Damian Poddebniak, Christian Dresen, Jens Mller, Fabian Ising, Sebastian Schinzel, Simon Friedberger,     Juraj Somorovsky, and Jrg Schwenk discovered that PIM Messagelib 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 using an application linked against PIM     Messagelib, an attacker could possibly use this issue to obtain the plaintext of an encrypted email. This     update mitigates the issue by preventing automatic loading of external content. (CVE-2017-17689)

    Jens Mller, Marcus Brinkmann, Damian Poddebniak, Sebastian Schinzel, and Jrg Schwenk discovered that     PIM Messagelib 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 using an application linked against PIM Messagelib, an     attacker could possibly use this issue to obtain the plaintext of an encrypted email. (CVE-2019-10732)

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.

This update for messagelib fixes the following issues :

  - CVE-2019-10732: Prevented accidental disclosure of     encrypted content when replying (boo#1131885).

A reply-based decryption oracle was found in kdepim, which provides the KMail e-mail client.

An attacker in possession of S/MIME or PGP encrypted emails can wrap them as sub-parts within a crafted multipart email. The encrypted part(s) can further be hidden using HTML/CSS or ASCII newline characters. This modified multipart email can be re-sent by the attacker to the intended receiver. If the receiver replies to this (benign looking) email, they unknowingly leak the plaintext of the encrypted message part(s) back to the attacker.

For Debian 8 'Jessie', this problem has been fixed in version 4:4.14.1-1+deb8u2.

We recommend that you upgrade your kdepim packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
261432	Ubuntu 18.04 LTS : PIM Messagelib vulnerabilities (USN-7730-1)	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
145775	openSUSE Security Update : messagelib (openSUSE-2021-188)	Nessus	SuSE Local Security Checks	medium
126010	Debian DLA-1825-1 : kdepim security update	Nessus	Debian Local Security Checks	medium

Detections

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CVE-2019-10732

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Tenable Plugins

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