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Computer vulnerabilities of Cisco PIX Software
OpenSSL: use after free via NewSessionTicket
Synthesis of the vulnerability
An attacker, who own a malicious TLS server, can send the NewSessionTicket message, to force the usage of a freed memory area in a client linked to OpenSSL, in order to trigger a denial of service, and possibly to execute code.
Impacted products: ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, Cisco ASR, Cisco ATA, Cisco AnyConnect Secure Mobility Client, AnyConnect VPN Client, Cisco ACE, ASA, AsyncOS, Cisco Catalyst, Cisco Content SMA, Cisco ESA, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Cisco IPS, IronPort Encryption, Nexus by Cisco, NX-OS, Cisco Prime Access Registrar, Prime Collaboration Assurance, Cisco Prime DCNM, Prime Infrastructure, Cisco Prime LMS, Prime Network Control Systems, 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, Cisco WSA, Debian, BIG-IP Hardware, TMOS, Fedora, FileZilla Server, FortiAnalyzer, FortiAnalyzer Virtual Appliance, FortiClient, FortiManager, FortiManager Virtual Appliance, FortiOS, FreeBSD, HP Operations, HP Switch, HP-UX, AIX, IRAD, Tivoli Storage Manager, Tivoli Workload Scheduler, WebSphere MQ, Juniper J-Series, Junos OS, Junos Pulse, Juniper Network Connect, Juniper SBR, McAfee Email and Web Security, McAfee Email Gateway, McAfee Web Gateway, Data ONTAP, Snap Creator Framework, SnapManager, NetBSD, NetScreen Firewall, ScreenOS, Nodejs Core, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Solaris, Palo Alto Firewall PA***, PAN-OS, pfSense, Pulse Connect Secure, Puppet, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Synology DS***, Synology RS***, Ubuntu, WinSCP.
Severity: 2/4.
Consequences: user access/rights, denial of service on client.
Provenance: internet client.
Creation date: 04/06/2015.
Identifiers: 1961569, 1964113, 1970103, 2003480, 2003620, 2003673, 9010038, 9010039, bulletinjul2015, c04760669, c05184351, c05353965, CERTFR-2015-AVI-431, CERTFR-2016-AVI-128, CERTFR-2016-AVI-303, cisco-sa-20150612-openssl, cpuapr2017, cpuoct2016, cpuoct2017, CTX216642, CVE-2015-1791, DSA-3287-1, FEDORA-2015-10047, FEDORA-2015-10108, FreeBSD-SA-15:10.openssl, HPSBGN03678, HPSBHF03613, HPSBUX03388, JSA10694, JSA10733, NetBSD-SA2015-008, NTAP-20150616-0001, openSUSE-SU-2015:1139-1, openSUSE-SU-2016:0640-1, PAN-SA-2016-0020, PAN-SA-2016-0028, RHSA-2015:1115-01, SA40002, SA98, SB10122, SOL16914, SSA:2015-162-01, SSRT102180, SUSE-SU-2015:1143-1, SUSE-SU-2015:1150-1, SUSE-SU-2015:1182-2, SUSE-SU-2015:1184-1, SUSE-SU-2015:1184-2, SUSE-SU-2015:1185-1, TSB16728, USN-2639-1, VIGILANCE-VUL-17062.
Description of the vulnerability
The TLS protocol uses the NewSessionTicket message to obtain a new session ticket (RFC 5077).
The ssl3_get_new_session_ticket() function of the ssl/s3_clnt.c file implements NewSessionTicket in an OpenSSL client. However, if the client is multi-threaded, this function frees a memory area before reusing it.
An attacker, who own a malicious TLS server, can therefore send the NewSessionTicket message, to force the usage of a freed memory area in a client linked to OpenSSL, in order to trigger a denial of service, and possibly to execute code.
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Cisco Adaptive Security Appliance: bypassing XAUTH access control
Synthesis of the vulnerability
An attacker can send a specially crafted packet to the IKE daemon, in order to bypass the access control rules defined in XAUTH.
Impacted products: ASA.
Severity: 1/4.
Consequences: client access/rights, data flow.
Provenance: intranet client.
Creation date: 03/06/2015.
Identifiers: 39157, CSCus47259, CVE-2015-0760, VIGILANCE-VUL-17045.
Description of the vulnerability
The Cisco Adaptive Security Appliance product includes an IKE service version 1 for IPsec signaling.
The XAUTH module is used to define access control rules for the IPsec client. However, the IKE daemon does not rightly check the packet received from the client.
An attacker can therefore send a specially crafted packet to the IKE daemon, in order to bypass the access control rules defined in XAUTH.
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Cisco ASA: denial of service via multicast
Synthesis of the vulnerability
An attacker can send a multicast packet to Cisco ASA, in order to trigger a denial of service on the forwarding multicast data.
Impacted products: ASA.
Severity: 2/4.
Consequences: denial of service on service, denial of service on client.
Provenance: intranet client.
Creation date: 21/05/2015.
Identifiers: 38937, CSCus74398, CVE-2015-0742, VIGILANCE-VUL-16954.
Description of the vulnerability
The Cisco ASA product implements PIM (Protocol-Independent Multicast) to setup multicast routing.
However, a remote unauthenticated attacker can send a multicast packet, to disturb PIM registration.
An attacker can therefore send a multicast packet to Cisco ASA, in order to trigger a denial of service on the forwarding multicast data.
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Cisco ASA, CX, FirePOWER: denial of service
Synthesis of the vulnerability
An attacker can send malicious packets to Cisco ASA, CX, or FirePOWER, in order to trigger a denial of service.
Impacted products: ASA.
Severity: 3/4.
Consequences: denial of service on server, denial of service on service.
Provenance: internet client.
Creation date: 08/04/2015.
Identifiers: CERTFR-2015-AVI-143, CERTFR-2015-AVI-148, cisco-sa-20150408-cxfp, CSCun56954, CSCuo58584, CSCus11007, CSCus13208, CVE-2015-0678, VIGILANCE-VUL-16563.
Description of the vulnerability
The Cisco ASA FirePOWER Services and Cisco ASA CX Services product can be installed with Cisco ASA.
However, when a flow of high rate packets are sent to the administration interface, a fatal error occurs.
An attacker can therefore send malicious packets to Cisco ASA, CX, or FirePOWER, in order to trigger a denial of service.
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Cisco ASA: three vulnerabilities
Synthesis of the vulnerability
An attacker can use several vulnerabilities of Cisco ASA.
Impacted products: ASA.
Severity: 3/4.
Consequences: administrator access/rights, privileged access/rights, user access/rights, denial of service on server, denial of service on service.
Provenance: internet client.
Number of vulnerabilities in this bulletin: 3.
Creation date: 08/04/2015.
Identifiers: CERTFR-2015-AVI-142, CERTFR-2015-AVI-148, cisco-sa-20150408-asa, CSCuq77655, CSCur21069, CSCus95290, CVE-2015-0675, CVE-2015-0676, CVE-2015-0677, VIGILANCE-VUL-16562.
Description of the vulnerability
Several vulnerabilities were announced in Cisco ASA.
A attacker remote attacker can use the Failover Ipsec feature, to inject commands, in order to execute code. [severity:3/4; CSCur21069, CVE-2015-0675]
An attacker can send malicious DNS packets, to consumme all available memory, in order to trigger a denial of service. [severity:3/4; CSCuq77655, CVE-2015-0676]
An attacker can send a malicious XML message to a VPN service, in order to trigger a denial of service. [severity:3/4; CSCus95290, CVE-2015-0677]
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NTP.org: two vulnerabilities of Crypto
Synthesis of the vulnerability
An attacker can use two vulnerabilities related to cryptographic features of NTP.org.
Impacted products: Cisco ASR, Cisco ACE, ASA, Cisco Catalyst, IOS by Cisco, IOS XE Cisco, IOS XR Cisco, Cisco IPS, Nexus by Cisco, NX-OS, Prime Infrastructure, Cisco PRSM, Cisco Router, Secure ACS, Debian, Black Diamond, ExtremeXOS, Summit, BIG-IP Hardware, TMOS, Fedora, FreeBSD, HP Switch, HP-UX, AIX, Meinberg NTP Server, NTP.org, openSUSE, Solaris, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity: 2/4.
Consequences: data reading, data creation/edition, denial of service on service.
Provenance: internet client.
Number of vulnerabilities in this bulletin: 2.
Creation date: 07/04/2015.
Identifiers: 2779, 2781, bulletinapr2015, c04679309, c05033748, cisco-sa-20150408-ntpd, CVE-2015-1798, CVE-2015-1799, DSA-3223-1, FEDORA-2015-5830, FEDORA-2015-5874, FreeBSD-SA-15:07.ntp, HPSBHF03557, HPSBUX03333, MDVSA-2015:202, ntp4_advisory, ntp_advisory3, openSUSE-SU-2015:0775-1, RHSA-2015:1459-01, RHSA-2015:2231-04, SOL16505, SOL16506, SSA:2015-111-08, SSRT102029, SUSE-SU-2015:1173-1, SUSE-SU-2016:1912-1, SUSE-SU-2016:2094-1, USN-2567-1, VIGILANCE-VUL-16548, VN-2015-006-NTP, VU#374268.
Description of the vulnerability
Several vulnerabilities were announced in NTP.org.
An attacker can use a message without MAC (Message Authentication Code), in order to bypass the authentication using a symmetric key. [severity:2/4; 2779, CVE-2015-1798]
An attacker can spoof a packet between two servers paired with a symmetric association, in order to trigger a denial of service. [severity:2/4; 2781, CVE-2015-1799]
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OpenSSL 0.9/1.0.0/1.0.1: five vulnerabilities
Synthesis of the vulnerability
An attacker can use several vulnerabilities of OpenSSL 0.9/1.0.0/1.0.1.
Impacted products: Arkoon FAST360, ArubaOS, ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, FabricOS, Brocade Network Advisor, Cisco ASR, AnyConnect VPN Client, Cisco ACE, ASA, AsyncOS, Cisco CSS, Cisco ESA, IOS XE Cisco, Cisco IPS, IronPort Email, IronPort Web, Nexus by Cisco, NX-OS, Prime Infrastructure, Cisco PRSM, Cisco Router, Secure ACS, Cisco CUCM, Cisco Unified CCX, Cisco IP Phone, Cisco MeetingPlace, Cisco Wireless IP Phone, WebNS, Cisco WSA, Debian, BIG-IP Hardware, TMOS, Fedora, FortiAnalyzer, FortiAnalyzer Virtual Appliance, FortiClient, FortiManager, FortiManager Virtual Appliance, FreeBSD, hMailServer, HP-UX, AIX, IRAD, Tivoli Storage Manager, Tivoli Workload Scheduler, WebSphere MQ, Juniper J-Series, Junos OS, Junos Space, Junos Space Network Management Platform, NSM Central Manager, NSMXpress, Juniper SBR, McAfee Email Gateway, ePO, McAfee NTBA, McAfee NGFW, VirusScan, McAfee Web Gateway, Data ONTAP, NetBSD, NetScreen Firewall, ScreenOS, Nodejs Core, OpenBSD, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Solaris, pfSense, Puppet, RHEL, JBoss EAP by Red Hat, Base SAS Software, SAS SAS/CONNECT, Slackware, Splunk Enterprise, Stonesoft NGFW/VPN, SUSE Linux Enterprise Desktop, SLES, Nessus, Ubuntu, Unix (platform) ~ not comprehensive, WinSCP.
Severity: 3/4.
Consequences: user access/rights, denial of service on service.
Provenance: internet client.
Number of vulnerabilities in this bulletin: 5.
Creation date: 19/03/2015.
Identifiers: 1701334, 1902519, 1960491, 1964410, 1975397, 55767, 7043086, 9010031, ARUBA-PSA-2015-007, bulletinapr2015, c04679334, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-169, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuapr2017, cpuoct2016, cpuoct2017, CTX216642, CVE-2015-0286, CVE-2015-0287, CVE-2015-0289, CVE-2015-0292, CVE-2015-0293, DSA-3197-1, DSA-3197-2, FEDORA-2015-4300, FEDORA-2015-4303, FG-IR-15-008, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2015:2243-1, openSUSE-SU-2016:0638-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2015:0800-01, RHSA-2016:0372-01, RHSA-2016:0445-01, RHSA-2016:0446-01, RHSA-2016:0490-01, SA40001, SA92, SB10110, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, SUSE-SU-2016:0678-1, TNS-2015-04, USN-2537-1, VIGILANCE-VUL-16429.
Description of the vulnerability
Several vulnerabilities were announced in OpenSSL 0.9/1.0.0/1.0.1.
An attacker can force a read at an invalid address in ASN1_TYPE_cmp, in order to trigger a denial of service. [severity:2/4; CVE-2015-0286]
An attacker can generate a memory corruption in ASN.1, in order to trigger a denial of service, and possibly to execute code. [severity:3/4; CVE-2015-0287]
An attacker can force a NULL pointer to be dereferenced in PKCS#7, in order to trigger a denial of service. [severity:2/4; CVE-2015-0289]
An attacker can generate a memory corruption with base64 data, in order to trigger a denial of service, and possibly to execute code. [severity:3/4; CVE-2015-0292]
An attacker can generate an OPENSSL_assert, in order to trigger a denial of service. [severity:2/4; CVE-2015-0293]
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OpenSSL: NULL pointer dereference via X509_to_X509_REQ
Synthesis of the vulnerability
An attacker can force a NULL pointer to be dereferenced in X509_to_X509_REQ() of OpenSSL, in order to trigger a denial of service.
Impacted products: Arkoon FAST360, ProxySG par Blue Coat, SGOS by Blue Coat, FabricOS, Brocade Network Advisor, Cisco ASR, AnyConnect VPN Client, Cisco ACE, ASA, AsyncOS, Cisco CSS, Cisco ESA, IOS XE Cisco, Cisco IPS, IronPort Email, IronPort Web, Nexus by Cisco, NX-OS, Prime Infrastructure, Cisco PRSM, Cisco Router, Secure ACS, Cisco CUCM, Cisco Unified CCX, Cisco IP Phone, Cisco MeetingPlace, Cisco Wireless IP Phone, WebNS, Cisco WSA, Debian, BIG-IP Hardware, TMOS, Fedora, FreeBSD, hMailServer, HP-UX, AIX, IRAD, Tivoli Workload Scheduler, Juniper J-Series, Junos OS, Junos Space, Junos Space Network Management Platform, NSM Central Manager, NSMXpress, Juniper SBR, McAfee Email Gateway, ePO, McAfee NTBA, McAfee NGFW, VirusScan, McAfee Web Gateway, Data ONTAP, NetBSD, NetScreen Firewall, ScreenOS, OpenBSD, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Solaris, pfSense, RHEL, Base SAS Software, SAS SAS/CONNECT, Slackware, Splunk Enterprise, Stonesoft NGFW/VPN, SUSE Linux Enterprise Desktop, SLES, Nessus, Ubuntu, Unix (platform) ~ not comprehensive, WinSCP.
Severity: 2/4.
Consequences: denial of service on service, denial of service on client.
Provenance: document.
Creation date: 09/03/2015.
Identifiers: 1701334, 1964410, 55767, 9010031, c04679334, CERTFR-2015-AVI-089, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuoct2017, CTX216642, CVE-2015-0288, DSA-3197-1, DSA-3197-2, FEDORA-2015-4300, FEDORA-2015-4303, FEDORA-2015-6855, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2015:2243-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2015:0800-01, SA40001, SB10110, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, TNS-2015-04, USN-2537-1, VIGILANCE-VUL-16342.
Description of the vulnerability
The OpenSSL product processes X.509 certificates.
However, the X509_to_X509_REQ() function does not check if a pointer is NULL, before using it.
An attacker can therefore force a NULL pointer to be dereferenced in X509_to_X509_REQ() of OpenSSL, in order to trigger a denial of service.
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OpenSSL: use after free via d2i_ECPrivateKey
Synthesis of the vulnerability
An attacker can force the usage of a freed memory area in d2i_ECPrivateKey of OpenSSL, in order to trigger a denial of service, and possibly to execute code.
Impacted products: ArubaOS, ProxySG par Blue Coat, SGOS by Blue Coat, FabricOS, Brocade Network Advisor, Cisco ASR, AnyConnect VPN Client, Cisco ACE, ASA, AsyncOS, Cisco CSS, Cisco ESA, IOS XE Cisco, Cisco IPS, IronPort Email, IronPort Web, Nexus by Cisco, NX-OS, Prime Infrastructure, Cisco PRSM, Cisco Router, Secure ACS, Cisco CUCM, Cisco Unified CCX, Cisco IP Phone, Cisco MeetingPlace, Cisco Wireless IP Phone, WebNS, Cisco WSA, Debian, BIG-IP Hardware, TMOS, Fedora, FreeBSD, hMailServer, HP-UX, AIX, IRAD, Security Directory Server, Tivoli Directory Server, Tivoli Workload Scheduler, WebSphere MQ, Juniper J-Series, Junos OS, Junos Pulse, Junos Space, Junos Space Network Management Platform, Juniper Network Connect, NSM Central Manager, NSMXpress, Juniper SBR, Data ONTAP, NetBSD, NetScreen Firewall, ScreenOS, OpenBSD, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Solaris, pfSense, RHEL, Base SAS Software, SAS SAS/CONNECT, Slackware, Splunk Enterprise, SUSE Linux Enterprise Desktop, SLES, Nessus, Ubuntu, Unix (platform) ~ not comprehensive, WinSCP.
Severity: 3/4.
Consequences: user access/rights, denial of service on service, denial of service on client.
Provenance: document.
Creation date: 09/03/2015.
Identifiers: 1698703, 1701334, 1902519, 1960491, 1964410, 55767, 7043086, 9010031, ARUBA-PSA-2015-007, c04679334, CERTFR-2015-AVI-089, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2015-AVI-177, CERTFR-2015-AVI-259, CERTFR-2016-AVI-303, cisco-sa-20150320-openssl, cisco-sa-20150408-ntpd, cpuoct2017, CTX216642, CVE-2015-0209, DSA-3197-1, DSA-3197-2, FEDORA-2015-10047, FEDORA-2015-10108, FEDORA-2015-4300, FEDORA-2015-4303, FEDORA-2015-6855, FreeBSD-SA-15:06.openssl, HPSBUX03334, JSA10680, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-007, NTAP-20150323-0002, openSUSE-SU-2015:0554-1, openSUSE-SU-2015:1277-1, openSUSE-SU-2016:0640-1, RHSA-2015:0715-01, RHSA-2015:0716-01, RHSA-2015:0752-01, RHSA-2016:1087-01, RHSA-2016:1088-01, RHSA-2016:1089-01, SA40001, SOL16301, SOL16302, SOL16317, SOL16319, SOL16320, SOL16321, SOL16323, SPL-98351, SPL-98531, SSA:2015-111-09, SSRT102000, SUSE-SU-2015:0541-1, SUSE-SU-2015:0553-1, SUSE-SU-2015:0553-2, SUSE-SU-2015:0578-1, TNS-2015-04, TSB16661, USN-2537-1, VIGILANCE-VUL-16341.
Description of the vulnerability
The OpenSSL product implements the Elliptic Curves algorithm.
However, the d2i_ECPrivateKey() function frees a memory area before reusing it.
An attacker can therefore force the usage of a freed memory area in d2i_ECPrivateKey() of OpenSSL, in order to trigger a denial of service, and possibly to execute code.
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OpenSSL, LibReSSL, Mono, JSSE: weakening TLS encryption via FREAK
Synthesis of the vulnerability
An attacker, located as a Man-in-the-Middle, can force the Chrome, JSSE, LibReSSL, Mono or OpenSSL client to accept a weak export algorithm, in order to more easily capture or alter exchanged data.
Impacted products: Arkoon FAST360, ArubaOS, Avaya Ethernet Routing Switch, ProxyAV, ProxySG par Blue Coat, SGOS by Blue Coat, FabricOS, Brocade Network Advisor, Cisco ATA, AnyConnect VPN Client, Cisco ACE, ASA, AsyncOS, Cisco ESA, IOS by Cisco, IronPort Email, IronPort Web, Nexus by Cisco, NX-OS, Cisco Prime Access Registrar, Prime Collaboration Assurance, Cisco Prime DCNM, Prime Infrastructure, Cisco Prime LMS, Prime Network Control Systems, Cisco PRSM, Cisco Router, Cisco IP Phone, Cisco MeetingPlace, Cisco WSA, Clearswift Email Gateway, Debian, Black Diamond, ExtremeXOS, Summit, BIG-IP Hardware, TMOS, Fedora, FortiClient, FortiGate, FortiGate Virtual Appliance, FortiOS, FreeBSD, Chrome, HPE NNMi, HP-UX, AIX, DB2 UDB, Domino, Notes, IRAD, Security Directory Server, Tivoli Directory Server, Tivoli Storage Manager, Tivoli Workload Scheduler, WebSphere AS Traditional, WebSphere MQ, Juniper J-Series, Junos OS, Junos Space, Junos Space Network Management Platform, NSM Central Manager, NSMXpress, Juniper SBR, McAfee Email Gateway, ePO, McAfee NTBA, McAfee NGFW, VirusScan, McAfee Web Gateway, Windows (platform) ~ not comprehensive, Data ONTAP, NetBSD, NetScreen Firewall, ScreenOS, Nodejs Core, OpenBSD, Java OpenJDK, OpenSSL, openSUSE, openSUSE Leap, Oracle Communications, Oracle Directory Services Plus, Oracle Fusion Middleware, Oracle Internet Directory, Java Oracle, Solaris, Tuxedo, WebLogic, pfSense, Puppet, RHEL, Base SAS Software, SAS SAS/CONNECT, Slackware, Sophos AV, Splunk Enterprise, Stonesoft NGFW/VPN, stunnel, SUSE Linux Enterprise Desktop, SLES, Ubuntu, Unix (platform) ~ not comprehensive.
Severity: 2/4.
Consequences: data reading, data creation/edition.
Provenance: internet server.
Number of vulnerabilities in this bulletin: 2.
Creation date: 04/03/2015.
Revision date: 09/03/2015.
Identifiers: 122007, 1450666, 1610582, 1647054, 1698613, 1699051, 1699810, 1700225, 1700997, 1701485, 1902260, 1903541, 1963275, 1968485, 1973383, 55767, 7014463, 7022958, 9010028, ARUBA-PSA-2015-003, bulletinjan2015, c04556853, c04679334, c04773241, CERTFR-2015-AVI-108, CERTFR-2015-AVI-117, CERTFR-2015-AVI-146, CERTFR-2016-AVI-303, cisco-sa-20150310-ssl, cpuapr2017, cpujul2018, cpuoct2017, CTX216642, CVE-2015-0138, CVE-2015-0204, DSA-3125-1, FEDORA-2015-0512, FEDORA-2015-0601, FG-IR-15-007, FREAK, FreeBSD-SA-15:01.openssl, HPSBMU03345, HPSBUX03244, HPSBUX03334, JSA10679, MDVSA-2015:019, MDVSA-2015:062, MDVSA-2015:063, NetBSD-SA2015-006, NetBSD-SA2015-007, NTAP-20150205-0001, openSUSE-SU-2015:0130-1, openSUSE-SU-2016:0640-1, RHSA-2015:0066-01, RHSA-2015:0800-01, RHSA-2015:1020-01, RHSA-2015:1021-01, RHSA-2015:1091-01, SA40015, SA88, SA91, SB10108, SB10110, SOL16120, SOL16123, SOL16124, SOL16126, SOL16135, SOL16136, SOL16139, SP-CAAANXD, SPL-95203, SPL-95206, SSA:2015-009-01, SSRT101885, SSRT102000, SUSE-SU-2015:1073-1, SUSE-SU-2015:1085-1, SUSE-SU-2015:1086-1, SUSE-SU-2015:1086-2, SUSE-SU-2015:1086-3, SUSE-SU-2015:1086-4, SUSE-SU-2015:1138-1, SUSE-SU-2015:1161-1, T1022075, USN-2459-1, VIGILANCE-VUL-16301, VN-2015-003_FREAK, VU#243585.
Description of the vulnerability
The TLS protocol uses a series of messages which have to be exchanged between the client and the server, before establishing a secured session.
Several cryptographic algorithms can be negotiated, such as algorithms allowed for USA export (less than 512 bits).
An attacker, located as a Man-in-the-Middle, can inject during the session initialization a message choosing an export algorithm. This message should generate an error, however some TLS clients accept it.
Note: the variant related to Windows is described in VIGILANCE-VUL-16332.
An attacker, located as a Man-in-the-Middle, can therefore force the Chrome, JSSE, LibReSSL, Mono or OpenSSL client to accept a weak export algorithm, in order to more easily capture or alter exchanged data.
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