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Red Hat Enterprise Linux 7.7: RHSA-2020-2539-01 Moderate: net-snmp DoS Fix

red hat
Calendar Grey June 12, 2020
Dist Redhat Esm H88
Canonical releases updated net-snmp for Ubuntu 16.04 with moderate vulnerabilities addressed alongside several bug corrections including potential Denial of Service problems.
An update for net-snmp is now available for Red Hat Enterprise Linux 7.7 Extended Update Support

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

Summary

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)

Topics%20covered

Topics Covered

security advisory moderate denial of service bug fix Red Hat Enterprise Linux net-snmp

References

https://access.redhat.com/security/cve/CVE-2018-18066 https://access.redhat.com/security/updates/classification#moderate

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

Read the Full Advisory


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

Topic

An update for net-snmp is now available for Red Hat Enterprise Linux 7.7Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service bug fix Red Hat Enterprise Linux net-snmp

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

Bugs Fixed

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]

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