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Mageia: 2021-0208 Moderate: KMail Attachment Decryption Risk

Deleting an attachment of a decrypted encrypted message stored on a remote server (e.g. an IMAP server) causes KMail to upload the decrypted content of the message to the remote server. This is not easily noticeable by the user because KMail does not display the decrypted content. . MGASA-2021-0208 - Updated messagelib packages fix security vulnerability Publication date: 07 May 2021 URL: https://advisories.mageia.org/MGASA-2021-0208.html Type: security Affected Mageia releases: 7, 8 CVE: CVE-2021-31855 Deleting an attachment of a decrypted encrypted message stored on a remote server (e.g. an IMAP server) causes KMail to upload the decrypted content of the message to the remote server. This is not easily noticeable by the user because KMail does not display the decrypted content. With a specially crafted message a user could be tricked into decrypting an encrypted message and then deleting an attachment attached to this message. If the attacker has access to the messages stored on the email server, then the attacker could read the decrypted content of the encrypted message (CVE-2021-31855). References: - https://bugs.mageia.org/show_bug.cgi?id=28861 - https://kde.org/info/security/advisory-20210429-1.txt - https://www.cve.org/CVERecord?id=CVE-2021-31855 SRPMS: - 8/core/messagelib-20.12.0-1.1.mga8 - 7/core/messagelib-19.04.0-1.2.mga7 . Revised messagelib modules resolve a vulnerability, permitting exposed data to be retrieved from afar.. Messagelib Security Update, Mageia 7, KMail Attachment Issue, Encrypted Message Risk. . LinuxSecurity.com Team

May 07, 2021 Mageia