RHSA-2018:1060 - Security Advisory

Topic

An update for pcs is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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 pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

Security Fix(es):

• pcs: Privilege escalation via authorized user malicious REST call (CVE-2018-1079)
• pcs: Debug parameter removal bypass, allowing information disclosure (CVE-2018-1086)
• rack-protection: Timing attack in authenticity_token.rb (CVE-2018-1000119)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2018-1079 issue was discovered by Ondrej Mular (Red Hat) and the CVE-2018-1086 issue was discovered by Cedric Buissart (Red Hat).

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 High Availability for x86_64 7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux Resilient Storage for IBM z Systems 7 s390x
• Red Hat Enterprise Linux High Availability for IBM z Systems 7 s390x
• Red Hat Enterprise Linux Resilient Storage for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Update Support 7.5 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.7 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 7.5 ppc64le
• Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 7.7 ppc64le
• Red Hat Enterprise Linux High Availability for Power LE - Update Services for SAP Solutions 7.6 ppc64le
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux High Availability for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le

Fixes

• BZ - 1534027 - CVE-2018-1000119 rack-protection: Timing attack in authenticity_token.rb
• BZ - 1550243 - CVE-2018-1079 pcs: Privilege escalation via authorized user malicious REST call
• BZ - 1557366 - CVE-2018-1086 pcs: Debug parameter removal bypass, allowing information disclosure

CVEs

• CVE-2018-1079
• CVE-2018-1086
• CVE-2018-1000119

References

• https://access.redhat.com/security/updates/classification/#important