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Red Hat Enterprise Linux 7 RHSA-2020-1081 Moderate: net-snmp DoS Issue

red hat
Calendar Grey March 31, 2020
Dist Redhat Esm H88
CentOS Linux 8 update for net-snmp addresses a denial of service vulnerability rated as moderate severity.
An update for net-snmp is now available for Red Hat Enterprise Linux 7

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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service red hat security fix net-snmp

References

https://access.redhat.com/security/cve/CVE-2018-18066 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/7.8_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: net-snmp-5.7.2-47.el7.src.rpm
x86_64: net-snmp-5.7.2-47.el7.x86_64.rpm net-snmp-agent-libs-5.7.2-47.el7.i686.rpm net-snmp-agent-libs-5.7.2-47.el7.x86_64.rpm net-snmp-debuginfo-5.7.2-47.el7.i686.rpm net-snmp-debuginfo-5.7.2-47.el7.x86_64.rpm net-snmp-libs-5.7.2-47.el7.i686.rpm net-snmp-libs-5.7.2-47.el7.x86_64.rpm net-snmp-utils-5.7.2-47.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: net-snmp-debuginfo-5.7.2-47.el7.i686.rpm net-snmp-debuginfo-5.7.2-47.el7.x86_64.rpm net-snmp-devel-5.7.2-47.el7.i686.rpm net-snmp-devel-5.7.2-47.el7.x86_64.rpm net-snmp-gui-5.7.2-47.el7.x86_64.rpm net-snmp-perl-5.7.2-47.el7.x86_64.rpm net-snmp-python-5.7.2-47.el7.x86_64.rpm net-snmp-sysvinit-5.7.2-47.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: net-snmp-5.7.2-47.el7.src.rpm
x86_64: net-snmp-5.7.2-47.el7.x86_64.rpm net-snmp-agent-libs-5.7.2-47.el7.i686.rpm net-snmp-agent-libs-5.7.2-47.el7.x86_64.rpm net-snmp-debuginfo-5.7.2-47.el7.i686.rpm net-snmp-debuginfo-5.7.2-47.el7.x86_64.rpm net-snmp-libs-5.7.2-47.el7.i686.rpm net-snmp-libs-5.7.2-47.el7.x86_64.rpm net-snmp-utils-5.7.2-47.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: net-snmp-debuginfo-5.7.2-47.el7.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:1081-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1081
Issue date: 2020-03-31

Topic

An update for net-snmp is now available for Red Hat Enterprise Linux 7.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 red hat security fix net-snmp

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1388118 - snmpd starts before the network stack is online (network.target vs network-online.target)

1547355 - snmpd: Despite non-zero interface_fadeout, network interface is deleted immediately sometimes

1637572 - CVE-2018-18066 net-snmp: NULL pointer exception in snmp_oid_compare in snmplib/snmp_api.c resulting in a denial of service

1695363 - MIB pass-through does NOT pass STRING VALUE for snmpset STRING oid type

1700494 - sscanf parsing bug in get_sysfs_stats() - net-snmp-5.7.2-diskio-whitelist.patch

1703752 - UCD-SNMP-MIB uses INTEGER32 instead of COUNTER64 for memory OIDs which limits to 2TiB

1779609 - Revert free memory patch from net-snmp

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