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====================================================================                   
Red Hat Security Advisory

Synopsis:          Moderate: net-snmp security and bug fix update
Advisory ID:       RHSA-2020:2539-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:2539
Issue date:        2020-06-11
CVE Names:         CVE-2018-18066
====================================================================
1. Summary:

An update for net-snmp is now available for Red Hat Enterprise Linux 7.7
Extended Update Support.

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 Enterprise Linux ComputeNode EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64

3. Description:

The net-snmp packages provide various libraries and tools for the Simple
Network Management Protocol (SNMP), including an SNMP library, an
extensible agent, tools for requesting or setting information from SNMP
agents, tools for generating and handling SNMP traps, a version of the
netstat command which uses SNMP, and a Tk/Perl Management Information Base
(MIB) browser.

Security Fix(es):

* net-snmp: NULL pointer exception in snmp_oid_compare in
snmplib/snmp_api.c resulting in a denial of service (CVE-2018-18066)

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.

Bug Fix(es):

* snmpd crashes due to double-free when freeing security context
(BZ#1812938)

* net-snmp memory leak (BZ#1832223)

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/):

1637572 - CVE-2018-18066 net-snmp: NULL pointer exception in snmp_oid_compare in snmplib/snmp_api.c resulting in a denial of service
1812938 - snmpd crashes due to double-free when freeing security context [rhel-7.7.z]
1832223 - net-snmp memory leak [rhel-7.7.z]

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):

Source:
net-snmp-5.7.2-43.el7_7.6.src.rpm

x86_64:
net-snmp-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.i686.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.i686.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-libs-5.7.2-43.el7_7.6.i686.rpm
net-snmp-libs-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-utils-5.7.2-43.el7_7.6.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):

x86_64:
net-snmp-debuginfo-5.7.2-43.el7_7.6.i686.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-devel-5.7.2-43.el7_7.6.i686.rpm
net-snmp-devel-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-gui-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-perl-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-python-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-sysvinit-5.7.2-43.el7_7.6.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.7):

Source:
net-snmp-5.7.2-43.el7_7.6.src.rpm

ppc64:
net-snmp-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.ppc.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.ppc.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-devel-5.7.2-43.el7_7.6.ppc.rpm
net-snmp-devel-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-libs-5.7.2-43.el7_7.6.ppc.rpm
net-snmp-libs-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-utils-5.7.2-43.el7_7.6.ppc64.rpm

ppc64le:
net-snmp-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-devel-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-libs-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-utils-5.7.2-43.el7_7.6.ppc64le.rpm

s390x:
net-snmp-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.s390.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.s390.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-devel-5.7.2-43.el7_7.6.s390.rpm
net-snmp-devel-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-libs-5.7.2-43.el7_7.6.s390.rpm
net-snmp-libs-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-utils-5.7.2-43.el7_7.6.s390x.rpm

x86_64:
net-snmp-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.i686.rpm
net-snmp-agent-libs-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.i686.rpm
net-snmp-debuginfo-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-devel-5.7.2-43.el7_7.6.i686.rpm
net-snmp-devel-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-libs-5.7.2-43.el7_7.6.i686.rpm
net-snmp-libs-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-utils-5.7.2-43.el7_7.6.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.7):

ppc64:
net-snmp-debuginfo-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-gui-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-perl-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-python-5.7.2-43.el7_7.6.ppc64.rpm
net-snmp-sysvinit-5.7.2-43.el7_7.6.ppc64.rpm

ppc64le:
net-snmp-debuginfo-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-gui-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-perl-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-python-5.7.2-43.el7_7.6.ppc64le.rpm
net-snmp-sysvinit-5.7.2-43.el7_7.6.ppc64le.rpm

s390x:
net-snmp-debuginfo-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-gui-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-perl-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-python-5.7.2-43.el7_7.6.s390x.rpm
net-snmp-sysvinit-5.7.2-43.el7_7.6.s390x.rpm

x86_64:
net-snmp-debuginfo-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-gui-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-perl-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-python-5.7.2-43.el7_7.6.x86_64.rpm
net-snmp-sysvinit-5.7.2-43.el7_7.6.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-2018-18066
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 2020 Red Hat, Inc.
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