Moderate: cyrus-sasl security, bug fix, and enhancement update

Related Vulnerabilities: CVE-2019-19906   CVE-2019-19906   CVE-2019-19906  

Synopsis

Moderate: cyrus-sasl security, bug fix, and enhancement update

Type/Severity

Security Advisory: Moderate

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 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.

Description

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.

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

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

  • BZ - 1791854 - CVE-2019-19906 cyrus-sasl: denial of service in _sasl_add_string function
  • BZ - 1817054 - RFE: support for Channel Bindings in SASL/GSSAPI
  • BZ - 1822133 - Fix GSS-SPNEGO in TLS with maxssf=0 to work against Windows servers

CVEs

References