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.

The remote host is running a version of Mac OS X version 10.11.x prior to 10.11.1 and is affected by multiple vulnerabilities in the following components :

 - Accelerate Framework (CVE-2015-5940)
 - apache_mod_php (CVE-2015-0235, CVE-2015-0273, CVE-2015-6834, CVE-2015-6835, CVE-2015-6836, CVE-2015-6837, CVE-2015-6838)
 - ATS (CVE-2015-6985)
 - Audio (CVE-2015-5933, CVE-2015-5934, CVE-2015-7003)
 - Bom (CVE-2015-7006)
 - CFNetwork (CVE-2015-7023)
 - configd (CVE-2015-7015)
 - CoreGraphics (CVE-2015-5925, CVE-2015-5926)
 - CoreText (CVE-2015-5944, CVE-2015-6975, CVE-2015-6992, CVE-2015-7017)
 - Directory Utility (CVE-2015-6980)
 - Disk Images (CVE-2015-6995)
 - EFI (CVE-2015-7035)
 - File Bookmark (CVE-2015-6987)
 - FontParser (CVE-2015-5927, CVE-2015-5942, CVE-2015-6976, CVE-2015-6977, CVE-2015-6978, CVE-2015-6990, CVE-2015-6991, CVE-2015-6993, CVE-2015-7008, CVE-2015-7009, CVE-2015-7010, CVE-2015-7018)
 - Grand Central Dispatch (CVE-2015-6989)
 - Graphics Drivers (CVE-2015-7019, CVE-2015-7020, CVE-2015-7021)
 - ImageIO (CVE-2015-5935, CVE-2015-5936, CVE-2015-5937, CVE-2015-5938, CVE-2015-5939)
 - IOAcceleratorFamily (CVE-2015-6996)
 - IOHIDFamily (CVE-2015-6974)
 - Kernel (CVE-2015-5932, CVE-2015-6988, CVE-2015-6994)
 - libarchive (CVE-2015-6984)
 - MCX Application Restrictions (CVE-2015-7016)
 - Net-SNMP (CVE-2014-3565, CVE-2012-6151)
 - OpenGL (CVE-2015-5924)
 - OpenSSH (CVE-2015-6563)
 - Sandbox (CVE-2015-5945)
 - Script Editor (CVE-2015-7007)
 - Security (CVE-2015-6983, CVE-2015-7024)
 - SecurityAgent (CVE-2015-5943)

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

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)

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.

  - 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.

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.

From Red Hat Security Advisory 2015:2345 :

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.

The remote host is running a version of Mac OS X that is 10.9.5 or later but prior to 10.11.1 It is, therefore, affected by multiple vulnerabilities in the following components :

  - Accelerate Framework (CVE-2015-5940)

  - apache_mod_php (CVE-2015-0235, CVE-2015-0273,     CVE-2015-6834, CVE-2015-6835, CVE-2015-6836,     CVE-2015-6837, CVE-2015-6838)

  - ATS (CVE-2015-6985)

  - Audio (CVE-2015-5933, CVE-2015-5934, CVE-2015-7003)

  - Bom (CVE-2015-7006)

  - CFNetwork (CVE-2015-7023)

  - configd (CVE-2015-7015)

  - CoreGraphics (CVE-2015-5925, CVE-2015-5926)

  - CoreText (CVE-2015-5944, CVE-2015-6975, CVE-2015-6992,     CVE-2015-7017)

  - Directory Utility (CVE-2015-6980)

  - Disk Images (CVE-2015-6995)

  - EFI (CVE-2015-7035)

  - File Bookmark (CVE-2015-6987)

  - FontParser (CVE-2015-5927, CVE-2015-5942, CVE-2015-6976,     CVE-2015-6977, CVE-2015-6978, CVE-2015-6990,     CVE-2015-6991, CVE-2015-6993, CVE-2015-7008,     CVE-2015-7009, CVE-2015-7010, CVE-2015-7018)

  - Grand Central Dispatch (CVE-2015-6989)

  - Graphics Drivers (CVE-2015-7019, CVE-2015-7020,     CVE-2015-7021)

  - ImageIO (CVE-2015-5935, CVE-2015-5936, CVE-2015-5937,     CVE-2015-5938, CVE-2015-5939)

  - IOAcceleratorFamily (CVE-2015-6996)

  - IOHIDFamily (CVE-2015-6974)

  - Kernel (CVE-2015-5932, CVE-2015-6988, CVE-2015-6994)

  - libarchive (CVE-2015-6984)

  - MCX Application Restrictions (CVE-2015-7016)

  - Net-SNMP (CVE-2014-3565, CVE-2012-6151)

  - OpenGL (CVE-2015-5924)

  - OpenSSH (CVE-2015-6563)

  - Sandbox (CVE-2015-5945)

  - Script Editor (CVE-2015-7007)

  - Security (CVE-2015-6983, CVE-2015-7024)

  - SecurityAgent (CVE-2015-5943)

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The remote host is affected by the vulnerability described in GLSA-201507-17 (SNMP: Denial of Service)

    A specially crafted trap message triggers a conversion to an erroneous       variable type when the -OQ option is used.
  Impact :

    A remote attacker could possibly cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

It was discovered that Net-SNMP incorrectly handled certain trap messages when the -OQ option was used. A remote attacker could use this issue to cause Net-SNMP to crash, resulting in a denial of service. (CVE-2014-3565)

Qinghao Tang discovered that Net-SNMP incorrectly handled SNMP PDU parsing failures. A remote attacker could use this issue to cause Net-SNMP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-5621).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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.

  - 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.

  - 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.

  - 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.

  - 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.

  - 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.

  - 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.

  - 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.

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 OracleVM system is missing necessary patches to address critical security updates :

  - Add Oracle ACFS to hrStorage (John Haxby) [orabug     18510373]

  - Quicker loading of IP-MIB::ipAddrTable (#1191393)

  - Quicker loading of IP-MIB::ipAddressTable (#1191393)

  - Fixed snmptrapd crash when '-OQ' parameter is used and     invalid trap is received (#CVE-2014-3565)

  - added faster caching into IP-MIB::ipNetToMediaTable     (#789500)

  - fixed compilation with '-Werror=format-security'     (#1181994)

  - added clear error message when port specified in     'clientaddrr' config option cannot be bound (#886468)

  - fixed error check in IP-MIB::ipAddressTable (#1012430)

  - fixed agentx client crash on failed response (#1023570)

  - fixed dashes in net-snmp-config.h (#1034441)

  - fixed crash on monitor trigger (#1050970)

  - fixed 'netsnmp_assert 1 == new_val->high failed' message     in system log (#1065210)

  - fixed parsing of 64bit counters from SMUX subagents     (#1069046)

  - Fixed HOST-RESOURCES-MIB::hrProcessorTable on machines     with >100 CPUs (#1070075)

  - fixed net-snmp-create-v3-user to have the same content     on 32 and 64bit installations (#1073544)

  - fixed IPADDRESS value length in Python bindings     (#1100099)

  - fixed hrStorageTable to contain 31 bits integers     (#1104293)

  - fixed links to developer man pages (#1119567)

  - fixed storageUseNFS functionality in hrStorageTable     (#1125793)

  - fixed netsnmp_set Python bindings call truncating at the     first '\000' character (#1126914)

  - fixed log level of SMUX messages (#1140234)

  - use python/README to net-snmp-python subpackage     (#1157373)

  - fixed forwarding of traps with RequestID=0 in snmptrapd     (#1146948)

  - fixed typos in NET-SNMP-PASS-MIB and SMUX-MIB (#1162040)

  - fixed close overhead of extend commands (#1188295)

  - fixed lmSensorsTable not reporting sensors with     duplicate names (#967871)

  - fixed hrDeviceTable with interfaces with large ifIndex     (#1195547)

  - added 'diskio' option to snmpd.conf, it's possible to     monitor only selected devices in diskIOTable (#990674)

  - fixed CVE-2014-2284: denial of service flaw in Linux     implementation of ICMP-MIB (#1073223)

  - added cache to hrSWRunTable to provide consistent     results (#1007634)

  - skip 'mvfs' (ClearCase) when skipNFSInHostResources is     enabled (#1073237)

  - fixed snmptrapd crashing on forwarding SNMPv3 traps     (#1131844)

  - fixed HOST-RESOURCES-MIB::hrSystemProcesses (#1134335)

  - fixed snmp daemons and utilities crashing in FIPS mode     (#1001830)

  - added support of btrfs filesystem in hrStorageTable     (#1006706)

  - fixed issues found by static analysis tools

  - restored ABI of read_configs_* functions

  - fixed parsing of bulk responses (#983116)

  - added support of vzfs filesystem in hrStorageTable     (#989498)

  - fixed endless loop when parsing sendmail configuration     file with queue groups (#991213)

  - fixed potential memory leak on realloc failure when     processing 'extend' option (#893119)

  - added precise enumeration of configuration files     searched to snmp_config(5) man page (#907571)

  - set permissions of snmpd.conf and snmptrapd conf to 0600     (#919239)

  - fixed kernel threads in hrSWRunTable (#919952)

  - fixed various error codes in Python module (#955771)

  - fixed snmpd crashing in the middle of agentx request     processing when a subagent disconnects (#955511)

  - allow 'includeFile' and 'includeDir' options in     configuration files (#917816)

  - fixed netlink message size (#927474)

  - fixed IF-MIB::ifSpeedHi on systems with non-standard     interface speeds (#947973)

  - fixed BRIDGE-MIB::dot1dBasePortTable not to include the     bridge itself as a port (#960568)

  - fixed snmpd segfault when 'agentaddress' configuration     options is used and too many SIGHUP signals are received     (#968898)

  - updated UCD-SNMP-MIB::dskTable to dynamically add/remove     disks if 'includeAllDisks' is specified in snmpd.conf     (#922691)

  - fixed crash when parsing invalid SNMP packets (#953926)

  - fixed snmpd crashing with 'exec' command with no     arguments in snmpd.conf (#919259)

From Red Hat Security Advisory 2015:1385 :

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.

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.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:1385 advisory.

  - net-snmp: snmptrapd crash when handling an SNMP trap containing a ifMtu with a NULL type (CVE-2014-3565)

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 fix security vulnerabilities :

Remotely exploitable denial of service vulnerability in Net-SNMP, in the Linux implementation of the ICMP-MIB, making the SNMP agent vulnerable if it is making use of the ICMP-MIB table objects (CVE-2014-2284).

Remotely exploitable denial of service vulnerability in Net-SNMP, in snmptrapd, due to how it handles trap requests with an empty community string when the perl handler is enabled (CVE-2014-2285).

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 (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 fix security vulnerabilities :

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 (CVE-2014-3565).

Update package fixes following bugs :

  - CVE-2014-3565 net-snmp: snmptrapd crash when handling an     SNMP trap containing a ifMtu with a NULL type

    - net-snmp-cert now works without net-snmp-devel package       installed

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

net-snmp was updated to fix a remote denial of service problem inside snmptrapd when started with the '-OQ' option (CVE-2014-3565)(bnc#894361)

This update for net-snmp fixes a remote denial of service problem inside snmptrapd when it is started with the '-OQ' option.
(CVE-2014-3565, bnc#894361)

Additionally, a timeout issue during SNMP MIB walk on OID 1.3.6.1.2.1.4.24 when using newer (v5.5+) versions of snmpwalk has been fixed. (bnc#865222)

ID	Name	Product	Family	Severity
9324	Mac OS X 10.9.5 or later < 10.11.1 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	critical
91302	F5 Networks BIG-IP : SNMP vulnerability (K17315)	Nessus	F5 Networks Local Security Checks	medium
87562	Scientific Linux Security Update : net-snmp on SL7.x x86_64 (20151119)	Nessus	Scientific Linux Local Security Checks	medium
87150	CentOS 7 : net-snmp (CESA-2015:2345)	Nessus	CentOS Local Security Checks	medium
87034	Oracle Linux 7 : net-snmp (ELSA-2015-2345)	Nessus	Oracle Linux Local Security Checks	medium
86982	RHEL 7 : net-snmp (RHSA-2015:2345)	Nessus	Red Hat Local Security Checks	medium
86654	Mac OS X < 10.11.1 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical
86086	GLSA-201507-17 : SNMP: Denial of Service	Nessus	Gentoo Local Security Checks	medium
85506	Ubuntu 14.04 LTS : Net-SNMP vulnerabilities (USN-2711-1)	Nessus	Ubuntu Local Security Checks	high
85202	Scientific Linux Security Update : net-snmp on SL6.x i386/x86_64 (20150722)	Nessus	Scientific Linux Local Security Checks	medium
85173	FreeBSD : net-snmp -- snmptrapd crash (4622635f-37a1-11e5-9970-14dae9d210b8)	Nessus	FreeBSD Local Security Checks	medium
85140	OracleVM 3.3 : net-snmp (OVMSA-2015-0099)	Nessus	OracleVM Local Security Checks	medium
85103	Oracle Linux 6 : net-snmp (ELSA-2015-1385)	Nessus	Oracle Linux Local Security Checks	medium
85016	CentOS 6 : net-snmp (CESA-2015:1385)	Nessus	CentOS Local Security Checks	medium
84942	RHEL 6 : net-snmp (RHSA-2015:1385)	Nessus	Red Hat Local Security Checks	high
82345	Mandriva Linux Security Advisory : net-snmp (MDVSA-2015:092)	Nessus	Mandriva Local Security Checks	medium
80708	Oracle Solaris Third-Party Patch Update : net-snmp (cve_2012_2141_denial_of)	Nessus	Solaris Local Security Checks	medium
77841	Mandriva Linux Security Advisory : net-snmp (MDVSA-2014:184)	Nessus	Mandriva Local Security Checks	medium
77801	Fedora 21 : net-snmp-5.7.2-23.fc21 (2014-9982)	Nessus	Fedora Local Security Checks	medium
77620	openSUSE Security Update : net-snmp (openSUSE-SU-2014:1108-1)	Nessus	SuSE Local Security Checks	medium
77612	Fedora 19 : net-snmp-5.7.2-15.fc19 (2014-10099)	Nessus	Fedora Local Security Checks	medium
77600	SuSE 11.3 Security Update : net-snmp (SAT Patch Number 9679)	Nessus	SuSE Local Security Checks	medium
77586	Fedora 20 : net-snmp-5.7.2-18.fc20 (2014-10095)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2014-3565

high

Tenable Plugins

critical

medium

medium

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medium

medium

critical

medium

high

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high

medium

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medium

medium