RHSA-2021:0916 - Security Advisory

Topic

An update for etcd is now available for Red Hat OpenStack Platform 16.1
(Train).

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

A highly-available key value store for shared configuration.

Security Fix(es):

• large slice causes panic in decodeRecord method (CVE-2020-15106)
• DoS in wal/wal.go (CVE-2020-15112)
• directories created via os.MkdirAll are not checked for permissions

(CVE-2020-15113)

• gateway can include itself as an endpoint resulting in resource

exhaustion and leads to DoS (CVE-2020-15114)

• improper validation of passwords allow an attacker to guess or

brute-force user's passwords (CVE-2020-15115)

• no authentication is performed against endpoints provided in the
• -endpoints flag (CVE-2020-15136)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in 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 OpenStack for IBM Power 16.1 ppc64le
• Red Hat OpenStack 16.1 x86_64

Fixes

• BZ - 1868870 - CVE-2020-15113 etcd: directories created via os.MkdirAll are not checked for permissions
• BZ - 1868872 - CVE-2020-15112 etcd: DoS in wal/wal.go
• BZ - 1868874 - CVE-2020-15114 etcd: gateway can include itself as an endpoint resulting in resource exhaustion and leads to DoS
• BZ - 1868878 - CVE-2020-15115 etcd: improper validation of passwords allow an attacker to guess or brute-force user's passwords
• BZ - 1868880 - CVE-2020-15136 etcd: no authentication is performed against endpoints provided in the --endpoints flag
• BZ - 1868883 - CVE-2020-15106 etcd: large slice causes panic in decodeRecord method

CVEs

• CVE-2020-15106
• CVE-2020-15112
• CVE-2020-15113
• CVE-2020-15114
• CVE-2020-15115
• CVE-2020-15136

References

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