The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2015-2345 advisory.

    - Fixed CVE-2014-3565, snmptrapd died when parsing certain traps (#1209361)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

snmplib/mib.c in net-snmp 5.7.0 and earlier, when the -OQ option is used, allows remote attackers to cause a denial of service (snmptrapd crash) via a crafted SNMP trap message, which triggers a conversion to the variable type designated in the MIB file, as demonstrated by a NULL type in an ifMtu trap message. (CVE-2014-3565)

The remote Solaris system is missing necessary patches to address security updates :

  - The perl_trapd_handler function in     perl/TrapReceiver/TrapReceiver.xs in Net-SNMP 5.7.3.pre3     and earlier, when using certain Perl versions, allows     remote attackers to cause a denial of service (snmptrapd     crash) via an empty community string in an SNMP trap,     which triggers a NULL pointer dereference within the     newSVpv function in Perl. (CVE-2014-2285)

  - snmplib/mib.c in net-snmp 5.7.0 and earlier, when the

    -OQ option is used, allows remote attackers to cause a     denial of service (snmptrapd crash) via a crafted SNMP     trap message, which triggers a conversion to the     variable type designated in the MIB file, as     demonstrated by a NULL type in an ifMtu trap message.
    (CVE-2014-3565)

Updated net-snmp packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

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.

A denial of service flaw was found in the way snmptrapd handled certain SNMP traps when started with the '-OQ' option. If an attacker sent an SNMP trap containing a variable with a NULL type where an integer variable type was expected, it would cause snmptrapd to crash.
(CVE-2014-3565)

This update also fixes the following bugs :

* The HOST-RESOURCES-MIB::hrSystemProcesses object was not implemented because parts of the HOST-RESOURCES-MIB module were rewritten in an earlier version of net-snmp. Consequently, HOST-RESOURCES-MIB::hrSystemProcesses did not provide information on the number of currently loaded or running processes. With this update, HOST-RESOURCES-MIB::hrSystemProcesses has been implemented, and the net-snmp daemon reports as expected. (BZ#1134335)

* The Net-SNMP agent daemon, snmpd, reloaded the system ARP table every 60 seconds. As a consequence, snmpd could cause a short CPU usage spike on busy systems with a large APR table. With this update, snmpd does not reload the full ARP table periodically, but monitors the table changes using a netlink socket. (BZ#789500)

* Previously, snmpd used an invalid pointer to the current time when periodically checking certain conditions specified by the 'monitor' option in the /etc/snmpd/snmpd.conf file. Consequently, snmpd terminated unexpectedly on start with a segmentation fault if a certain entry with the 'monitor' option was used. Now, snmpd initializes the correct pointer to the current time, and snmpd no longer crashes on start. (BZ#1050970)

* Previously, snmpd expected 8-bit network interface indices when processing HOST-RESOURCES-MIB::hrDeviceTable. If an interface index of a local network interface was larger than 30,000 items, snmpd could terminate unexpectedly due to accessing invalid memory. Now, processing of all network sizes is enabled, and snmpd no longer crashes in the described situation. (BZ#1195547)

* The snmpdtrapd service incorrectly checked for errors when forwarding a trap with a RequestID value of 0, and logged 'Forward failed' even though the trap was successfully forwarded. This update fixes snmptrapd checks and the aforementioned message is now logged only when appropriate. (BZ#1146948)

* Previously, snmpd ignored the value of the 'storageUseNFS' option in the /etc/snmpd/snmpd.conf file. As a consequence, NFS drivers were shown as 'Network Disks', even though 'storageUseNFS' was set to '2' to report them as 'Fixed Disks' in HOST-RESOURCES-MIB::hrStorageTable.
With this update, snmpd takes the 'storageUseNFS' option value into account, and 'Fixed Disks' NFS drives are reported correctly.
(BZ#1125793)

* Previously, the Net-SNMP python binding used an incorrect size (8 bytes instead of 4) for variables of IPADDRESS type. Consequently, applications that were using Net-SNMP Python bindings could send malformed SNMP messages. With this update, the bindings now use 4 bytes for variables with IPADRESS type, and only valid SNMP messages are sent. (BZ#1100099)

* Previously, the snmpd service did not cut values in HOST-RESOURCES-MIB::hrStorageTable to signed 32-bit integers, as required by SNMP standards, and provided the values as unsigned integers. As a consequence, the HOST-RESOURCES-MIB::hrStorageTable implementation did not conform to RFC 2790. The values are now cut to 32-bit signed integers, and snmpd is therefore standard compliant.
(BZ#1104293)

Users of net-snmp are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Murray McAllister reports :

A remote denial-of-service flaw was found in the way snmptrapd handled certain SNMP traps when started with the '-OQ' option. If an attacker sent an SNMP trap containing a variable with a NULL type where an integer variable type was expected, it would cause snmptrapd to crash.

The remote MiracleLinux 7 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2015-708:01 advisory.

    SNMP (Simple Network Management Protocol) is a protocol used for     network management. The NET-SNMP project includes various SNMP tools:
    an extensible agent, an SNMP library, 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     mib browser. This package contains the snmpd and snmptrapd daemons,     documentation, etc.
    You will probably also want to install the net-snmp-utils package,     which contains NET-SNMP utilities.
    Security issues fixed with this release:
    CVE-2014-3565     snmplib/mib.c in net-snmp 5.7.0 and earlier, when the -OQ option is     used, allows remote attackers to cause a denial of service (snmptrapd     crash) via a crafted SNMP trap message, which triggers a conversion to     the variable type designated in the MIB file, as demonstrated by a     NULL type in an ifMtu trap message.
    Fixed bugs:
    * Previously, the clientaddr option in the snmp.conf file affected outgoing messages sent only over IPv4.
    With this release, outgoing IPv6 messages are correctly sent from the interface specified by clientaddr.
    * The Net-SNMP daemon, snmpd, did not properly clean memory when reloading its configuration file with     multiple exec entries. Consequently, the daemon terminated unexpectedly. Now, the memory is properly     cleaned, and snmpd no longer crashes on reload.
    * Prior to this update, snmpd did not parse complete IPv4 traffic statistics, but reported the number of     received or sent bytes in the IP-MIB::ipSystemStatsTable only for IPv6 packets and not for IPv4. This     affected objects ipSystemStatsInOctets, ipSystemStatsOutOctets, ipSystemStatsInMcastOctets, and     ipSystemStatsOutMcastOctets. Now, the statistics reported by snmpd are collected for IPv4 as well.
    * The Net-SNMP daemon, snmpd, did not correctly detect the file system change from read-only to read-     write. Consequently, after remounting the file system into the read-write mode, the daemon reported it to     be still in the read-only mode. A patch has been applied, and snmpd now detects the mode changes as     expected.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Updated net-snmp packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

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.

A denial of service flaw was found in the way snmptrapd handled certain SNMP traps when started with the '-OQ' option. If an attacker sent an SNMP trap containing a variable with a NULL type where an integer variable type was expected, it would cause snmptrapd to crash.
(CVE-2014-3565)

This update also fixes the following bugs :

* Previously, the clientaddr option in the snmp.conf file affected outgoing messages sent only over IPv4. With this release, outgoing IPv6 messages are correctly sent from the interface specified by clientaddr. (BZ#1190679)

* The Net-SNMP daemon, snmpd, did not properly clean memory when reloading its configuration file with multiple 'exec' entries.
Consequently, the daemon terminated unexpectedly. Now, the memory is properly cleaned, and snmpd no longer crashes on reload. (BZ#1228893)

* Prior to this update, snmpd did not parse complete IPv4 traffic statistics, but reported the number of received or sent bytes in the IP-MIB::ipSystemStatsTable only for IPv6 packets and not for IPv4.
This affected objects ipSystemStatsInOctets, ipSystemStatsOutOctets, ipSystemStatsInMcastOctets, and ipSystemStatsOutMcastOctets. Now, the statistics reported by snmpd are collected for IPv4 as well.
(BZ#1235697)

* The Net-SNMP daemon, snmpd, did not correctly detect the file system change from read-only to read-write. Consequently, after remounting the file system into the read-write mode, the daemon reported it to be still in the read-only mode. A patch has been applied, and snmpd now detects the mode changes as expected. (BZ#1241897)

All net-snmp users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
87034	Oracle Linux 7 : net-snmp (ELSA-2015-2345)	Nessus	Oracle Linux Local Security Checks	2015/11/24	2024/11/1	medium
91302	F5 Networks BIG-IP : SNMP vulnerability (K17315)	Nessus	F5 Networks Local Security Checks	2016/5/24	2021/3/10	medium
80708	Oracle Solaris Third-Party Patch Update : net-snmp (cve_2012_2141_denial_of)	Nessus	Solaris Local Security Checks	2015/1/19	2021/1/14	medium
85016	CentOS 6 : net-snmp (CESA-2015:1385)	Nessus	CentOS Local Security Checks	2015/7/28	2021/1/4	medium
85173	FreeBSD : net-snmp -- snmptrapd crash (4622635f-37a1-11e5-9970-14dae9d210b8)	Nessus	FreeBSD Local Security Checks	2015/8/3	2021/1/6	medium
288957	MiracleLinux 7 : net-snmp-5.7.2-24.el7 (AXSA:2015-708:01)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	high
87150	CentOS 7 : net-snmp (CESA-2015:2345)	Nessus	CentOS Local Security Checks	2015/12/2	2021/1/4	medium

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