Debian Security Advisory
DSA-4745-1 dovecot -- security update
- Date Reported:
- 12 Aug 2020
- Affected Packages:
- dovecot
- Vulnerable:
- Yes
- Security database references:
- In Mitre's CVE dictionary: CVE-2020-12100, CVE-2020-12673, CVE-2020-12674.
- More information:
-
Several vulnerabilities have been discovered in the Dovecot email server.
- CVE-2020-12100
Receiving mail with deeply nested MIME parts leads to resource exhaustion as Dovecot attempts to parse it.
- CVE-2020-12673
Dovecot's NTLM implementation does not correctly check message buffer size, which leads to a crash when reading past allocation.
- CVE-2020-12674
Dovecot's RPA mechanism implementation accepts zero-length message, which leads to assert-crash later on.
For the stable distribution (buster), these problems have been fixed in version 1:2.3.4.1-5+deb10u3.
We recommend that you upgrade your dovecot packages.
For the detailed security status of dovecot please refer to its security tracker page at: https://security-tracker.debian.org/tracker/dovecot
- CVE-2020-12100