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AUSCERT External Security Bulletin Redistribution
ESB-2021.3117
Red Hat OpenStack Platform 16.2 (etcd) security update
16 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Red Hat OpenStack Platform 16.2 (etcd)
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33198 CVE-2021-33197 CVE-2021-33195
CVE-2021-31525
Reference: ESB-2021.3007
ESB-2021.2939
ESB-2021.2735
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:3487
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Red Hat Security Advisory
Synopsis: Moderate: Red Hat OpenStack Platform 16.2 (etcd) security update
Advisory ID: RHSA-2021:3487-01
Product: Red Hat OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3487
Issue date: 2021-09-15
CVE Names: CVE-2021-31525 CVE-2021-33195 CVE-2021-33197
CVE-2021-33198
=====================================================================
1. Summary:
An update for etcd is now available for Red Hat OpenStack Platform 16.2
(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.
2. Relevant releases/architectures:
Red Hat OpenStack Platform 16.2 - ppc64le, x86_64
3. Description:
A highly-available key value store for shared configuration
Security Fix(es):
* net/http: panic in ReadRequest and ReadResponse when reading a very large
header (CVE-2021-31525)
* golang: net: lookup functions may return invalid host names
(CVE-2021-33195)
* golang: net/http/httputil: ReverseProxy forwards connection headers if
first one is empty (CVE-2021-33197)
* golang: math/big.Rat: may cause a panic or an unrecoverable fatal error
if passed inputs with very large exponents (CVE-2021-33198)
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.
4. 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
5. Bugs fixed (https://bugzilla.redhat.com/):
1958341 - CVE-2021-31525 golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header
1989564 - CVE-2021-33195 golang: net: lookup functions may return invalid host names
1989570 - CVE-2021-33197 golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty
1989575 - CVE-2021-33198 golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents
6. Package List:
Red Hat OpenStack Platform 16.2:
Source:
etcd-3.3.23-3.1.el8ost.1.src.rpm
ppc64le:
etcd-3.3.23-3.1.el8ost.1.ppc64le.rpm
etcd-debuginfo-3.3.23-3.1.el8ost.1.ppc64le.rpm
etcd-debugsource-3.3.23-3.1.el8ost.1.ppc64le.rpm
x86_64:
etcd-3.3.23-3.1.el8ost.1.x86_64.rpm
etcd-debuginfo-3.3.23-3.1.el8ost.1.x86_64.rpm
etcd-debugsource-3.3.23-3.1.el8ost.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-31525
https://access.redhat.com/security/cve/CVE-2021-33195
https://access.redhat.com/security/cve/CVE-2021-33197
https://access.redhat.com/security/cve/CVE-2021-33198
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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