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Computer vulnerabilities of Nexus by Cisco

vulnerability alert CVE-2017-3733

OpenSSL: denial of service via the "Encrypt-Then-Mac" option

Synthesis of the vulnerability

An attacker can change the state of the "Encrypt-Then-Mac" TLS option in a renegotiation with a server or client based on OpenSSL, in order to trigger a denial of service.
Impacted products: Cisco ASR, Cisco ATA, AsyncOS, Cisco Catalyst, Cisco Content SMA, Cisco ESA, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Nexus by Cisco, NX-OS, Cisco Prime Access Registrar, Prime Collaboration Assurance, Cisco Prime DCNM, Prime Infrastructure, Cisco Router, Cisco CUCM, Cisco Manager Attendant Console, Cisco Wireless IP Phone, Cisco WSA, Cisco Wireless Controller, HP Operations, IRAD, Tivoli Storage Manager, OpenSSL, Oracle Directory Server, Oracle Directory Services Plus, Oracle Fusion Middleware, Oracle Identity Management, Oracle iPlanet Web Server, Tuxedo, VirtualBox, WebLogic, Oracle Web Tier.
Severity: 2/4.
Creation date: 16/02/2017.
Identifiers: 2003480, 2003620, 2003673, 2004940, CERTFR-2017-AVI-035, cisco-sa-20170130-openssl, cpujan2018, cpuoct2017, CVE-2017-3733, HPESBGN03728, VIGILANCE-VUL-21871.

Description of the vulnerability

OpenSSL implements the possibility of renegotiation of TLS option and parameters during a session.

However, for some combinations of algorithms, the negation of the state of the option "Encrypt-Then-Mac" generates a fatal error.

An attacker can therefore change the state of the "Encrypt-Then-Mac" TLS option in a renegotiation with a server or client based on OpenSSL, in order to trigger a denial of service.
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vulnerability announce CVE-2013-0149

OSPF: corrupting the routing database

Synthesis of the vulnerability

An attacker can spoof OSPF messages, in order to corrupt the routing database.
Impacted products: CheckPoint IP Appliance, IPSO, CheckPoint Security Gateway, Cisco ASR, ASA, Cisco Catalyst, IOS by Cisco, IOS XE Cisco, Nexus by Cisco, NX-OS, Cisco Router, ProCurve Switch, HP Switch, Juniper E-Series, Juniper J-Series, JUNOSe, Junos OS, NetScreen Firewall, ScreenOS, SUSE Linux Enterprise Desktop, SLES.
Severity: 3/4.
Creation date: 02/08/2013.
Revisions dates: 01/08/2014, 14/02/2017.
Identifiers: BID-61566, c03880910, CERTA-2013-AVI-458, CERTA-2013-AVI-487, CERTA-2013-AVI-508, cisco-sa-20130801-lsaospf, CQ95773, CSCug34469, CSCug34485, CSCug39762, CSCug39795, CSCug63304, CVE-2013-0149, HPSBHF02912, JSA10575, JSA10580, JSA10582, PR 878639, PR 895456, sk94490, SUSE-SU-2014:0879-1, VIGILANCE-VUL-13192, VU#229804.

Description of the vulnerability

The RFC 2328 defines the OSPF protocol (Open Shortest Path First) which established IP routes, using LSA (Link State Advertisement) messages.

The LSA Type 1 Update (LSU, Link-State Update) message is used to update the routing database. However, the RFC does not request to check the "Link State ID" and "Advertising Router" fields of LSU messages. Several implementations (Cisco, Juniper, etc.) therefore do not perform this check.

An attacker can thus spoof a LSU message if he knows:
 - the IP address of the target router
 - LSA DB sequence numbers
 - the router ID of the OSPF Designated Router

An attacker can therefore spoof OSPF messages, in order to corrupt the routing database.
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vulnerability announce CVE-2016-7055 CVE-2017-3730 CVE-2017-3731

OpenSSL: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of OpenSSL.
Impacted products: Blue Coat CAS, ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, Brocade vTM, Cisco ASR, Cisco ATA, AsyncOS, Cisco Catalyst, Cisco Content SMA, Cisco ESA, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Nexus by Cisco, NX-OS, Cisco Prime Access Registrar, Prime Collaboration Assurance, Cisco Prime DCNM, Prime Infrastructure, Cisco Router, Cisco CUCM, Cisco Manager Attendant Console, Cisco Wireless IP Phone, Cisco WSA, Cisco Wireless Controller, Debian, BIG-IP Hardware, TMOS, Fedora, FileZilla Server, FortiAnalyzer, FortiAnalyzer Virtual Appliance, FortiOS, FreeBSD, hMailServer, AIX, IRAD, Rational ClearCase, Security Directory Server, Tivoli Storage Manager, Tivoli Workload Scheduler, WebSphere AS Traditional, WebSphere MQ, Copssh, Junos OS, Juniper Network Connect, NSM Central Manager, NSMXpress, SRX-Series, MariaDB ~ precise, ePO, Meinberg NTP Server, MySQL Community, MySQL Enterprise, Data ONTAP, OpenSSL, openSUSE Leap, Oracle Communications, Oracle Directory Server, Oracle Directory Services Plus, Oracle Fusion Middleware, Oracle Identity Management, Oracle iPlanet Web Server, Oracle OIT, Solaris, Tuxedo, VirtualBox, WebLogic, Oracle Web Tier, Palo Alto Firewall PA***, PAN-OS, Percona Server, XtraDB Cluster, pfSense, Pulse Connect Secure, Pulse Secure Client, RHEL, Slackware, stunnel, SUSE Linux Enterprise Desktop, SLES, Nessus, TrendMicro ServerProtect, Ubuntu, VxWorks.
Severity: 2/4.
Creation date: 26/01/2017.
Identifiers: 1117414, 2000544, 2000988, 2000990, 2002331, 2004036, 2004940, 2009389, 2010154, 2011567, 2012827, 2014202, 2014651, 2014669, 2015080, BSA-2016-204, BSA-2016-207, BSA-2016-211, BSA-2016-212, BSA-2016-213, BSA-2016-216, BSA-2016-234, bulletinapr2017, bulletinjan2018, bulletinoct2017, CERTFR-2017-AVI-035, CERTFR-2018-AVI-343, cisco-sa-20170130-openssl, cpuapr2017, cpujan2018, cpujul2017, cpujul2018, cpuoct2017, CVE-2016-7055, CVE-2017-3730, CVE-2017-3731, CVE-2017-3732, DLA-814-1, DSA-3773-1, FEDORA-2017-3451dbec48, FEDORA-2017-e853b4144f, FG-IR-17-019, FreeBSD-SA-17:02.openssl, ibm10732391, ibm10733905, JSA10775, K37526132, K43570545, K44512851, K-510805, NTAP-20170127-0001, NTAP-20170310-0002, NTAP-20180201-0001, openSUSE-SU-2017:0481-1, openSUSE-SU-2017:0487-1, openSUSE-SU-2017:0527-1, openSUSE-SU-2017:0941-1, openSUSE-SU-2017:2011-1, openSUSE-SU-2017:2868-1, openSUSE-SU-2018:0458-1, PAN-70674, PAN-73914, PAN-SA-2017-0012, PAN-SA-2017-0014, PAN-SA-2017-0016, RHSA-2017:0286-01, RHSA-2018:2568-01, RHSA-2018:2575-01, SA141, SA40423, SB10188, SSA:2017-041-02, SUSE-SU-2018:0112-1, SUSE-SU-2018:2839-1, SUSE-SU-2018:3082-1, TNS-2017-03, USN-3181-1, VIGILANCE-VUL-21692.

Description of the vulnerability

Several vulnerabilities were announced in OpenSSL.

An attacker can force a read at an invalid address via Truncated Packet, in order to trigger a denial of service, or to obtain sensitive information. [severity:2/4; CVE-2017-3731]

An attacker can force a NULL pointer to be dereferenced via DHE/ECDHE Parameters, in order to trigger a denial of service. [severity:2/4; CVE-2017-3730]

An attacker can use a carry propagation error via BN_mod_exp(), in order to compute the private key. [severity:1/4; CVE-2017-3732]

An error occurs in the Broadwell-specific Montgomery Multiplication Procedure, but with no apparent impact. [severity:1/4; CVE-2016-7055]
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computer vulnerability CVE-2017-3804

Cisco Nexus: denial of service via IS-IS

Synthesis of the vulnerability

An attacker can send malicious IS-IS packets to Cisco Nexus, in order to trigger a denial of service.
Impacted products: Nexus by Cisco, NX-OS.
Severity: 2/4.
Creation date: 19/01/2017.
Identifiers: cisco-sa-20170118-nexus, CSCvc45002, CVE-2017-3804, VIGILANCE-VUL-21625.

Description of the vulnerability

The Cisco Nexus product has a service to manage received IS-IS packets.

However, when malicious IS-IS packets are received, a fatal error occurs.

An attacker can therefore send malicious IS-IS packets to Cisco Nexus, in order to trigger a denial of service.
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vulnerability bulletin CVE-2016-7053 CVE-2016-7054 CVE-2016-7055

OpenSSL 1.1: three vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of OpenSSL 1.1.
Impacted products: Cisco ASR, Cisco Aironet, Cisco ATA, Cisco AnyConnect Secure Mobility Client, ASA, AsyncOS, Cisco ESA, IOS by Cisco, IOS XR Cisco, Nexus by Cisco, NX-OS, Cisco Prime LMS, Cisco Router, Secure ACS, Cisco CUCM, Cisco Unified CCX, Cisco IP Phone, Cisco MeetingPlace, Cisco Wireless IP Phone, Cisco Wireless Controller, NetWorker, VNX Operating Environment, VNX Series, FortiAnalyzer, FortiAnalyzer Virtual Appliance, FortiOS, IRAD, Tivoli Storage Manager, Copssh, Junos OS, Juniper Network Connect, NSM Central Manager, NSMXpress, SRX-Series, MySQL Community, MySQL Enterprise, Data ONTAP, OpenSSL, openSUSE Leap, Oracle Directory Server, Oracle Directory Services Plus, Oracle Fusion Middleware, Oracle Identity Management, Oracle iPlanet Web Server, Oracle OIT, Solaris, Tuxedo, WebLogic, Oracle Web Tier, Percona Server, pfSense, Pulse Connect Secure, Pulse Secure Client.
Severity: 2/4.
Creation date: 10/11/2016.
Revision date: 13/12/2016.
Identifiers: 2004036, 2004940, 2011567, 492284, 492616, bulletinapr2017, CERTFR-2018-AVI-343, cisco-sa-20161114-openssl, cpujan2018, cpujul2017, CVE-2016-7053, CVE-2016-7054, CVE-2016-7055, ESA-2016-148, ESA-2016-149, FG-IR-17-019, JSA10775, NTAP-20170127-0001, NTAP-20170310-0002, NTAP-20180201-0001, openSUSE-SU-2017:0527-1, openSUSE-SU-2017:0941-1, openSUSE-SU-2018:0458-1, SA40423, VIGILANCE-VUL-21093.

Description of the vulnerability

Several vulnerabilities were announced in OpenSSL 1.1.

An attacker can generate a buffer overflow via ChaCha20/Poly1305, in order to trigger a denial of service. [severity:2/4; CVE-2016-7054]

An attacker can force a NULL pointer to be dereferenced via CMS Structures, in order to trigger a denial of service. [severity:2/4; CVE-2016-7053]

An error occurs in the Broadwell-specific Montgomery Multiplication Procedure, but with no apparent impact. [severity:1/4; CVE-2016-7055]
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vulnerability CVE-2016-7426 CVE-2016-7427 CVE-2016-7428

NTP.org: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of NTP.org.
Impacted products: Blue Coat CAS, Cisco ASR, Cisco Catalyst, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Nexus by Cisco, NX-OS, Prime Collaboration Assurance, Cisco Prime DCNM, Prime Infrastructure, Cisco Prime LMS, Cisco Router, Secure ACS, Cisco CUCM, Cisco Unified CCX, Cisco MeetingPlace, Cisco Unity ~ precise, BIG-IP Hardware, TMOS, Fedora, FreeBSD, HP Switch, HP-UX, AIX, Security Directory Server, Juniper J-Series, Junos OS, Junos Space, Meinberg NTP Server, Data ONTAP, NTP.org, openSUSE Leap, Solaris, pfSense, RHEL, Slackware, Spectracom SecureSync, Synology DSM, Synology DS***, Synology RS***, Ubuntu.
Severity: 2/4.
Creation date: 21/11/2016.
Identifiers: 2009389, bulletinoct2016, CERTFR-2017-AVI-090, cisco-sa-20161123-ntpd, CVE-2016-7426, CVE-2016-7427, CVE-2016-7428, CVE-2016-7429, CVE-2016-7431, CVE-2016-7433, CVE-2016-7434, CVE-2016-9310, CVE-2016-9311, CVE-2016-9312, FEDORA-2016-7209ab4e02, FEDORA-2016-c198d15316, FEDORA-2016-e8a8561ee7, FreeBSD-SA-16:39.ntp, HPESBHF03883, HPESBUX03706, HPESBUX03885, JSA10776, JSA10796, K51444934, K55405388, K87922456, MBGSA-1605, NTAP-20170127-0001, NTAP-20170310-0002, NTAP-20180201-0001, openSUSE-SU-2016:3280-1, pfSense-SA-17_03.webgui, RHSA-2017:0252-01, SA139, SSA:2016-326-01, TALOS-2016-0130, TALOS-2016-0131, TALOS-2016-0203, TALOS-2016-0204, USN-3349-1, VIGILANCE-VUL-21170, VU#633847.

Description of the vulnerability

Several vulnerabilities were announced in NTP.org.

An attacker can force an assertion error, in order to trigger a denial of service. [severity:2/4; CVE-2016-9311, TALOS-2016-0204]

An attacker can bypass security features via Mode 6, in order to obtain sensitive information. [severity:2/4; CVE-2016-9310, TALOS-2016-0203]

An attacker can trigger a fatal error via Broadcast Mode Replay, in order to trigger a denial of service. [severity:2/4; CVE-2016-7427, TALOS-2016-0131]

An attacker can trigger a fatal error via Broadcast Mode Poll Interval, in order to trigger a denial of service. [severity:2/4; CVE-2016-7428, TALOS-2016-0130]

An attacker can send malicious UDP packets, in order to trigger a denial of service on Windows. [severity:2/4; CVE-2016-9312]

An unknown vulnerability was announced via Zero Origin Timestamp. [severity:2/4; CVE-2016-7431]

An attacker can force a NULL pointer to be dereferenced via _IO_str_init_static_internal(), in order to trigger a denial of service. [severity:2/4; CVE-2016-7434]

An unknown vulnerability was announced via Interface selection. [severity:2/4; CVE-2016-7429]

An attacker can trigger a fatal error via Client Rate Limiting, in order to trigger a denial of service. [severity:2/4; CVE-2016-7426]

An unknown vulnerability was announced via Reboot Sync. [severity:2/4; CVE-2016-7433]
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vulnerability bulletin CVE-2016-5195

Linux kernel: privilege escalation via Copy On Write, Dirty COW

Synthesis of the vulnerability

A local attacker can generate a memory corruption via a Copy On Write on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Impacted products: SNS, Cisco ATA, Nexus by Cisco, NX-OS, Cisco Prime Access Registrar, Cisco Prime DCNM, Cisco CUCM, Debian, NetWorker, BIG-IP Hardware, TMOS, Fedora, Android OS, HP Operations, HP Switch, Junos Space, NSM Central Manager, NSMXpress, Linux, McAfee Email Gateway, openSUSE, openSUSE Leap, Oracle Communications, Palo Alto Firewall PA***, PAN-OS, HDX, RealPresence Resource Manager, Polycom VBP, RHEL, Slackware, Spectracom SecureSync, SUSE Linux Enterprise Desktop, SLES, Synology DSM, Synology DS***, Synology RS***, Ubuntu, WindRiver Linux.
Severity: 2/4.
Creation date: 20/10/2016.
Identifiers: 1384344, 494072, c05341463, CERTFR-2016-AVI-353, CERTFR-2016-AVI-356, CERTFR-2016-AVI-357, CERTFR-2016-AVI-370, CERTFR-2017-AVI-001, CERTFR-2017-AVI-012, CERTFR-2017-AVI-022, cisco-sa-20161026-linux, cpujul2018, CVE-2016-5195, Dirty COW, DLA-670-1, DSA-3696-1, ESA-2016-170, FEDORA-2016-c3558808cd, FEDORA-2016-db4b75b352, HPESBGN03742, HPSBHF03682, JSA10770, JSA10774, K10558632, openSUSE-SU-2016:2583-1, openSUSE-SU-2016:2584-1, openSUSE-SU-2016:2625-1, openSUSE-SU-2016:2649-1, PAN-SA-2017-0003, PAN-SA-2017-0013, PAN-SA-2017-0014, PAN-SA-2017-0016, RHSA-2016:2098-01, RHSA-2016:2105-01, RHSA-2016:2106-01, RHSA-2016:2110-01, RHSA-2016:2118-01, RHSA-2016:2120-01, RHSA-2016:2124-01, RHSA-2016:2126-01, RHSA-2016:2127-01, RHSA-2016:2128-01, RHSA-2016:2132-01, RHSA-2016:2133-01, RHSA-2018:0180-01, SB10177, SB10178, SSA:2016-305-01, STORM-2016-006, SUSE-SU-2016:2585-1, SUSE-SU-2016:2592-1, SUSE-SU-2016:2593-1, SUSE-SU-2016:2596-1, SUSE-SU-2016:2614-1, SUSE-SU-2016:3069-1, SUSE-SU-2016:3304-1, USN-3104-1, USN-3104-2, USN-3105-1, USN-3105-2, USN-3106-1, USN-3106-2, USN-3106-3, USN-3106-4, USN-3107-1, USN-3107-2, VIGILANCE-VUL-20923, VU#243144.

Description of the vulnerability

The Linux kernel supports the Copy On Write operation, which is used to copy memory only when it is modified.

However, a local attacker can manipulate the memory, so the COW operation writes in Read Only memory.

A local attacker can therefore generate a memory corruption via a Copy On Write on the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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computer vulnerability announce CVE-2016-1454

Cisco NX-OS: denial of service via BGP

Synthesis of the vulnerability

An attacker can send a malicious BGP packet to Cisco NX-OS, in order to trigger a denial of service.
Impacted products: Nexus by Cisco, NX-OS.
Severity: 2/4.
Creation date: 06/10/2016.
Identifiers: CERTFR-2016-AVI-331, cisco-sa-20161005-bgp, CSCuq77105, CSCux11417, CVE-2016-1454, VIGILANCE-VUL-20787.

Description of the vulnerability

The Cisco NX-OS product has a service to manage received BGP packets.

However, when a malicious packet is received, a fatal error occurs.

An attacker can therefore send a malicious BGP packet to Cisco NX-OS, in order to trigger a denial of service.
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computer vulnerability alert CVE-2015-6392

Cisco NX-OS: denial of service via DHCPv4

Synthesis of the vulnerability

An attacker can send a malicious DHCPv4 packet to Cisco NX-OS, in order to trigger a denial of service.
Impacted products: Nexus by Cisco, NX-OS.
Severity: 2/4.
Creation date: 06/10/2016.
Identifiers: CERTFR-2016-AVI-331, cisco-sa-20161005-dhcp1, CSCuq24603, CSCur93159, CSCus21693, CSCut76171, CVE-2015-6392, VIGILANCE-VUL-20786.

Description of the vulnerability

The Cisco NX-OS product has a service to manage received DHCPv4 packets.

However, when a malicious packet is received, a fatal error occurs.

An attacker can therefore send a malicious DHCPv4 packet to Cisco NX-OS, in order to trigger a denial of service.
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computer vulnerability CVE-2015-6393

Cisco NX-OS: denial of service via DHCPv4

Synthesis of the vulnerability

An attacker can send a malicious DHCPv4 packet to Cisco NX-OS, in order to trigger a denial of service.
Impacted products: Nexus by Cisco, NX-OS.
Severity: 2/4.
Creation date: 06/10/2016.
Identifiers: CERTFR-2016-AVI-331, cisco-sa-20161005-dhcp2, CSCuq39250, CSCus21733, CSCus21739, CSCut76171, CSCux67182, CVE-2015-6393, VIGILANCE-VUL-20785.

Description of the vulnerability

The Cisco NX-OS product has a service to manage received DHCPv4 packets.

However, when a malicious packet is received, a fatal error occurs.

An attacker can therefore send a malicious DHCPv4 packet to Cisco NX-OS, in order to trigger a denial of service.
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