The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.

vulnerability note CVE-2014-0224

OpenSSL: man in the middle via ChangeCipherSpec

Synthesis of the vulnerability

An attacker can act as a man in the middle between a client and a server using OpenSSL, in order to read or alter exchanged data.
Vulnerable products: ArubaOS, ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, GAiA, CheckPoint IP Appliance, IPSO, Provider-1, SecurePlatform, CheckPoint Security Appliance, CheckPoint Security Gateway, Cisco ASR, Cisco ATA, Cisco ACE, ASA, AsyncOS, Cisco Catalyst, CiscoWorks, Cisco Content SMA, Cisco CSS, Cisco ESA, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Cisco IPS, IronPort Email, IronPort Management, IronPort Web, Nexus by Cisco, NX-OS, Prime Collaboration Assurance, Prime Collaboration Manager, Prime Infrastructure, Cisco PRSM, Cisco Router, Secure ACS, Cisco CUCM, Cisco Manager Attendant Console, Cisco Unified CCX, Cisco IP Phone, Cisco MeetingPlace, Cisco Wireless IP Phone, Cisco Unity ~ precise, WebNS, Cisco WSA, Clearswift Web Gateway, Debian, Avamar, EMC CAVA, EMC CEE, EMC CEPA, Celerra FAST, Celerra NS, Celerra NX4, EMC CMDCE, Connectrix Switch, ECC, NetWorker, PowerPath, Unisphere EMC, VNX Operating Environment, VNX Series, BIG-IP Hardware, TMOS, Fedora, FortiAnalyzer, FortiAnalyzer Virtual Appliance, FortiClient, FortiManager, FortiManager Virtual Appliance, FreeBSD, HP Operations, ProCurve Switch, HP Switch, HP-UX, AIX, Tivoli Storage Manager, WebSphere MQ, Juniper J-Series, Junos OS, Junos Pulse, Juniper Network Connect, Juniper UAC, McAfee Web Gateway, MySQL Enterprise, NetBSD, OpenBSD, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Solaris, Polycom CMA, HDX, RealPresence Collaboration Server, Polycom VBP, RHEL, JBoss EAP by Red Hat, ACE Agent, ACE Server, RSA Authentication Agent, RSA Authentication Manager, SecurID, ROS, ROX, RuggedSwitch, SIMATIC, Slackware, Splunk Enterprise, stunnel, SUSE Linux Enterprise Desktop, SLES, Nessus, InterScan Messaging Security Suite, InterScan Web Security Suite, TrendMicro ServerProtect, Ubuntu, ESXi, vCenter Server, VMware vSphere, VMware vSphere Hypervisor, Websense Email Security, Websense Web Filter, Websense Web Security.
Severity of this weakness: 3/4.
Consequences of an attack: data reading, data creation/edition, data flow.
Hacker's origin: document.
Creation date: 05/06/2014.
Revision date: 05/06/2014.
Références of this bulletin: 1676496, 1690827, aid-06062014, c04336637, c04347622, c04363613, CERTFR-2014-AVI-253, CERTFR-2014-AVI-254, CERTFR-2014-AVI-255, CERTFR-2014-AVI-260, CERTFR-2014-AVI-274, CERTFR-2014-AVI-279, CERTFR-2014-AVI-286, CERTFR-2014-AVI-513, cisco-sa-20140605-openssl, cpuoct2016, CTX140876, CVE-2014-0224, DOC-53313, DSA-2950-1, DSA-2950-2, FEDORA-2014-17576, FEDORA-2014-17587, FEDORA-2014-7101, FEDORA-2014-7102, FG-IR-14-018, FreeBSD-SA-14:14.openssl, HPSBHF03052, HPSBUX03046, JSA10629, MDVSA-2014:105, MDVSA-2014:106, MDVSA-2015:062, NetBSD-SA2014-006, openSUSE-SU-2014:0764-1, openSUSE-SU-2014:0765-1, openSUSE-SU-2015:0229-1, openSUSE-SU-2016:0640-1, RHSA-2014:0624-01, RHSA-2014:0625-01, RHSA-2014:0626-01, RHSA-2014:0627-01, RHSA-2014:0628-01, RHSA-2014:0629-01, RHSA-2014:0630-01, RHSA-2014:0631-01, RHSA-2014:0632-01, RHSA-2014:0633-01, RHSA-2014:0679-01, RHSA-2014:0680-01, SA40006, SA80, SB10075, sk101186, SOL15325, SPL-85063, SSA:2014-156-03, SSA-234763, SSRT101590, SUSE-SU-2014:0759-1, SUSE-SU-2014:0759-2, SUSE-SU-2014:0761-1, SUSE-SU-2014:0762-1, USN-2232-1, USN-2232-2, USN-2232-3, USN-2232-4, VIGILANCE-VUL-14844, VMSA-2014-0006, VMSA-2014-0006.1, VMSA-2014-0006.10, VMSA-2014-0006.11, VMSA-2014-0006.2, VMSA-2014-0006.3, VMSA-2014-0006.4, VMSA-2014-0006.5, VMSA-2014-0006.6, VMSA-2014-0006.7, VMSA-2014-0006.8, VMSA-2014-0006.9, VU#978508.

Description of the vulnerability

The OpenSSL product implements SSL/TLS, which uses a handshake.

However, by using a handshake with a ChangeCipherSpec message, an attacker can force the usage of weak keys.

An attacker can therefore act as a man in the middle between a client and a server using OpenSSL, in order to read or alter exchanged data.
Full Vigil@nce bulletin... (Free trial)

Computer vulnerabilities tracking service

Vigil@nce provides a system vulnerability patch. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system. The Vigil@nce vulnerability database contains several thousand vulnerabilities. Each administrator can customize the list of products for which he wants to receive vulnerability alerts.