RedHat: RHSA-2021-1887:01 Moderate: dovecot security and bug fix update
Summary
Dovecot is an IMAP server for Linux and other UNIX-like systems, written
primarily with security in mind. It also contains a small POP3 server, and
supports e-mail in either the maildir or mbox format. The SQL drivers and
authentication plug-ins are provided as subpackages.
Security Fix(es):
* dovecot: IMAP hibernation function allows mail access (CVE-2020-24386)
* dovecot: Denial of service via mail MIME parsing (CVE-2020-25275)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.4 Release Notes linked from the References section.
Summary
Solution
For details on how to apply this update, which includes the changes
described in this advisory, refer to:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2020-24386 https://access.redhat.com/security/cve/CVE-2020-25275 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/
Package List
Red Hat Enterprise Linux AppStream (v. 8):
Source:
dovecot-2.3.8-9.el8.src.rpm
aarch64:
dovecot-2.3.8-9.el8.aarch64.rpm
dovecot-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-debugsource-2.3.8-9.el8.aarch64.rpm
dovecot-mysql-2.3.8-9.el8.aarch64.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-pgsql-2.3.8-9.el8.aarch64.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-pigeonhole-2.3.8-9.el8.aarch64.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.aarch64.rpm
ppc64le:
dovecot-2.3.8-9.el8.ppc64le.rpm
dovecot-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-debugsource-2.3.8-9.el8.ppc64le.rpm
dovecot-mysql-2.3.8-9.el8.ppc64le.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-pgsql-2.3.8-9.el8.ppc64le.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-pigeonhole-2.3.8-9.el8.ppc64le.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.ppc64le.rpm
s390x:
dovecot-2.3.8-9.el8.s390x.rpm
dovecot-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-debugsource-2.3.8-9.el8.s390x.rpm
dovecot-mysql-2.3.8-9.el8.s390x.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-pgsql-2.3.8-9.el8.s390x.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-pigeonhole-2.3.8-9.el8.s390x.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.s390x.rpm
x86_64:
dovecot-2.3.8-9.el8.x86_64.rpm
dovecot-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-debugsource-2.3.8-9.el8.x86_64.rpm
dovecot-mysql-2.3.8-9.el8.x86_64.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-pgsql-2.3.8-9.el8.x86_64.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-pigeonhole-2.3.8-9.el8.x86_64.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
dovecot-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-debugsource-2.3.8-9.el8.aarch64.rpm
dovecot-devel-2.3.8-9.el8.aarch64.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.aarch64.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.aarch64.rpm
ppc64le:
dovecot-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-debugsource-2.3.8-9.el8.ppc64le.rpm
dovecot-devel-2.3.8-9.el8.ppc64le.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.ppc64le.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.ppc64le.rpm
s390x:
dovecot-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-debugsource-2.3.8-9.el8.s390x.rpm
dovecot-devel-2.3.8-9.el8.s390x.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.s390x.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.s390x.rpm
x86_64:
dovecot-2.3.8-9.el8.i686.rpm
dovecot-debuginfo-2.3.8-9.el8.i686.rpm
dovecot-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-debugsource-2.3.8-9.el8.i686.rpm
dovecot-debugsource-2.3.8-9.el8.x86_64.rpm
dovecot-devel-2.3.8-9.el8.i686.rpm
dovecot-devel-2.3.8-9.el8.x86_64.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.i686.rpm
dovecot-mysql-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.i686.rpm
dovecot-pgsql-debuginfo-2.3.8-9.el8.x86_64.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.i686.rpm
dovecot-pigeonhole-debuginfo-2.3.8-9.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for dovecot is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Bugs Fixed
1805947 - Creating tmp files for systemd on behalf of dovecot references legacy directory /var/run/ instead of /run
1888111 - imap crashes in assertion "(ctx->nested_parts_count > 0)" regularly
1894418 - imap crashes in libdovecot-storage with assert "(block_count == 0 || block_idx+1 == block_count)"
1912455 - CVE-2020-24386 dovecot: IMAP hibernation function allows mail access
1912460 - CVE-2020-25275 dovecot: Denial of service via mail MIME parsing