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Red Hat Security Advisory 2020-4655-01

Red Hat Security Advisory 2020-4655-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4655-01 - The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and SIEVE support. Issues addressed include bypass and privilege escalation vulnerabilities.

tags | advisory, vulnerability, imap
systems | linux, redhat
advisories | CVE-2019-18928, CVE-2019-19783
SHA-256 | 351b1e471e4038244a22555e9ae5e3516d9d76c701f6e5c112212a28d3c5a7d5

Red Hat Security Advisory 2020-4655-01

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====================================================================
Red Hat Security Advisory

Synopsis: Moderate: cyrus-imapd security update
Advisory ID: RHSA-2020:4655-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4655
Issue date: 2020-11-03
CVE Names: CVE-2019-18928 CVE-2019-19783
====================================================================
1. Summary:

An update for cyrus-imapd is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The cyrus-imapd packages contain a high-performance mail server with IMAP,
POP3, NNTP, and SIEVE support.

Security Fix(es):

* cyrus-imapd: privilege escalation in HTTP request (CVE-2019-18928)

* cyrus-imapd: lmtpd component created mailboxes with administrator
privileges if the "fileinto" was used, bypassing ACL checks
(CVE-2019-19783)

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 8.3 Release Notes linked from the References section.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1671239 - Changelog was removed, reverting the commit is required
1710722 - cyrus-imapd-key.pem has wrong permissions
1775177 - CVE-2019-18928 cyrus-imapd: privilege escalation in HTTP request
1786756 - CVE-2019-19783 cyrus-imapd: lmtpd component created mailboxes with administrator privileges if the "fileinto" was used, bypassing ACL checks

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
cyrus-imapd-3.0.7-19.el8.src.rpm

aarch64:
cyrus-imapd-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-debuginfo-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-debugsource-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-utils-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-utils-debuginfo-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-vzic-3.0.7-19.el8.aarch64.rpm
cyrus-imapd-vzic-debuginfo-3.0.7-19.el8.aarch64.rpm

ppc64le:
cyrus-imapd-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-debuginfo-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-debugsource-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-utils-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-utils-debuginfo-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-vzic-3.0.7-19.el8.ppc64le.rpm
cyrus-imapd-vzic-debuginfo-3.0.7-19.el8.ppc64le.rpm

s390x:
cyrus-imapd-3.0.7-19.el8.s390x.rpm
cyrus-imapd-debuginfo-3.0.7-19.el8.s390x.rpm
cyrus-imapd-debugsource-3.0.7-19.el8.s390x.rpm
cyrus-imapd-utils-3.0.7-19.el8.s390x.rpm
cyrus-imapd-utils-debuginfo-3.0.7-19.el8.s390x.rpm
cyrus-imapd-vzic-3.0.7-19.el8.s390x.rpm
cyrus-imapd-vzic-debuginfo-3.0.7-19.el8.s390x.rpm

x86_64:
cyrus-imapd-3.0.7-19.el8.i686.rpm
cyrus-imapd-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-debuginfo-3.0.7-19.el8.i686.rpm
cyrus-imapd-debuginfo-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-debugsource-3.0.7-19.el8.i686.rpm
cyrus-imapd-debugsource-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-utils-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-utils-debuginfo-3.0.7-19.el8.i686.rpm
cyrus-imapd-utils-debuginfo-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-vzic-3.0.7-19.el8.x86_64.rpm
cyrus-imapd-vzic-debuginfo-3.0.7-19.el8.i686.rpm
cyrus-imapd-vzic-debuginfo-3.0.7-19.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/

7. References:

https://access.redhat.com/security/cve/CVE-2019-18928
https://access.redhat.com/security/cve/CVE-2019-19783
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.3_release_notes/

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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