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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31855

SRPMS:
- 8/core/messagelib-20.12.0-1.1.mga8
- 7/core/messagelib-19.04.0-1.2.mga7