Debian Security Advisory
DLA-2517-1 dovecot -- LTS security update
- Date Reported:
- 05 Jan 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2020-24386, CVE-2020-25275.
- More information:
It was discovered that there were two issues in the Dovecot IMAP server:
An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).
Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.
For Debian 9
Stretch, these problems have been fixed in version 1:2.2.27-3+deb9u7.
We recommend that you upgrade your dovecot packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS