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Red Hat Enterprise Linux 8: RHSA-2021:3492 Moderate: cyrus-imapd DoS

red hat
Calendar Grey September 13, 2021
Dist Redhat Esm H88
A significant patch for cyrus-imapd on Red Hat Enterprise Linux 8 addresses critical vulnerabilities and potential denial of service challenges.
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 IMAP server provides access to personal mail, system-wide bulletin boards, news-feeds, calendar and contacts through the IMAP, JMAP, NNTP, CalDAV and CardDAV protocols.
Security Fix(es):
* cyrus-imapd: Denial of service via string hashing algorithm collisions (CVE-2021-33582)
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.

Topics%20covered

Topics Covered

security advisory denial of service security fix cyrus-imapd red hat enterprise linux important update product security

References

https://access.redhat.com/security/cve/CVE-2021-33582 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: cyrus-imapd-3.0.7-20.el8_4.1.src.rpm
aarch64: cyrus-imapd-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-debuginfo-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-debugsource-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-utils-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-utils-debuginfo-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-vzic-3.0.7-20.el8_4.1.aarch64.rpm cyrus-imapd-vzic-debuginfo-3.0.7-20.el8_4.1.aarch64.rpm
ppc64le: cyrus-imapd-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-debuginfo-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-debugsource-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-utils-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-utils-debuginfo-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-vzic-3.0.7-20.el8_4.1.ppc64le.rpm cyrus-imapd-vzic-debuginfo-3.0.7-20.el8_4.1.ppc64le.rpm
s390x: cyrus-imapd-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-debuginfo-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-debugsource-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-utils-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-utils-debuginfo-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-vzic-3.0.7-20.el8_4.1.s390x.rpm cyrus-imapd-vzic-debuginfo-3.0.7-20.el8_4.1.s390x.rpm
x86_64: cyrus-imapd-3.0.7-20.el8_4.1.i686.rpm cyrus-imapd-3.0.7-20.el8_4.1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3492-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3492
Issue date: 2021-09-13

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 Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service security fix cyrus-imapd red hat enterprise linux important update product security

Relevant Releases Architectures

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

Bugs Fixed

1993232 - CVE-2021-33582 cyrus-imapd: Denial of service via string hashing algorithm collisions

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