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Red Hat Enterprise Linux 8 Advisory RHSA-2020:4497-01 Moderate SASL DoS

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
Cautionary alert issued regarding cyrus-sasl within Red Hat Enterprise Linux 8, detailing recent updates, patches, and improved features.
An update for cyrus-sasl 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-sasl packages contain the Cyrus implementation of Simple Authentication and Security Layer (SASL). SASL is a method for adding authentication support to connection-based protocols.
Security Fix(es):
* cyrus-sasl: denial of service in _sasl_add_string function (CVE-2019-19906)
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 denial of service Red Hat bug fix sasl

References

https://access.redhat.com/security/cve/CVE-2019-19906 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.3_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: cyrus-sasl-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-debugsource-2.1.27-5.el8.aarch64.rpm cyrus-sasl-devel-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-gs2-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-gssapi-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-ldap-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-lib-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-md5-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-ntlm-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-plain-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-scram-debuginfo-2.1.27-5.el8.aarch64.rpm cyrus-sasl-sql-2.1.27-5.el8.aarch64.rpm cyrus-sasl-sql-debuginfo-2.1.27-5.el8.aarch64.rpm
ppc64le: cyrus-sasl-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-debugsource-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-devel-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-gs2-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-gssapi-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-ldap-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-lib-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-md5-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-ntlm-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-plain-debuginfo-2.1.27-5.el8.ppc64le.rpm cyrus-sasl-scram-debuginfo-2.1.27-5.el8.ppc64le.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:4497-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4497
Issue date: 2020-11-03

Topic

An update for cyrus-sasl 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 denial of service Red Hat bug fix sasl

Relevant Releases Architectures

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

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

Bugs Fixed

1791854 - CVE-2019-19906 cyrus-sasl: denial of service in _sasl_add_string function

1817054 - RFE: support for Channel Bindings in SASL/GSSAPI

1822133 - Fix GSS-SPNEGO in TLS with maxssf=0 to work against Windows servers

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