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Red Hat Enterprise Linux 8: RHSA-2020-4655 Security Update for cyrus-imapd

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
An update aimed at enhancing security for cyrus-imapd in Red Hat Linux 8 tackles several moderate concerns, particularly those related to potential privilege escalation vulnerabilities.
An update for cyrus-imapd is now available for Red Hat Enterprise Linux 8

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate red hat privilege escalation cyrus-imapd

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/

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

Read the Full Advisory


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

Topic

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 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.

Topics%20covered

Topics Covered

security advisory moderate red hat privilege escalation cyrus-imapd

Relevant Releases Architectures

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

Bugs Fixed

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

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