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Vulnerability Alert

OpenSSL TLS Client ECDH Ciphersuite Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:34549
Version:12
First Published:2014 June 06 13:17 GMT
Last Published:2014 October 17 13:20 GMT
Port: Not available
CVE:CVE-2014-3470
BugTraq ID:67898
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.2
 
 
Version Summary:ICS-CERT has released a security advisory to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.
 
 
Description
A vulnerability in OpenSSL Transport Layer Security (TLS) clients could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to way the affected software performs anonymous Elliptic Curve Diffie-Hellman (ECDH) key exchange. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted handshake packet to a targeted system. A successful exploit could cause the affected application to crash, resulting in a DoS condition.

OpenSSL has confirmed the vulnerability and released software updates.
 
Warning Indicators
The following OpenSSL versions are affected:
  • OpenSSL versions prior to 0.9.8za
  • OpenSSL versions prior to 1.0.0m
  • OpenSSL versions prior to 1.0.1h
 
IntelliShield Analysis
To exploit this vulnerability, an attacker would need to send a crafted handshake request to the targeted device. Depending on where the system resides in an environment, an attacker may need to bypass firewall restrictions or other protection measures, which may reduce the likelihood of a successful exploit.

OpenSSL TLS clients that have anonymous ECDH ciphersuite enabled are affected by this vulnerability.
 
Vendor Announcements
OpenSSL.org has released a security advisory at the following link: CVE-2014-3470

Apple has released security advisory at the following link: HT6443


Blue Coat has released a security advisory at the following link: SA80

FreeBSD has released a security advisory at the following link: FreeBSD-SA-14:14.openssl

HP has released security bulletins c04336637, c04337774, and c04367164 at the following links: HPSBUX03046 SSRT101590, HPSBOV03047 SSRT101594, HPSBMU03065 SSRT101630, and HPSBNS03067 SSRT101592

ICS-CERT has released a vulnerability note at the following link: ICSA-14-198-03F

Oracle has released a security blog at the following link: CVE-2014-3470

Red Hat has released an official CVE statement and security advisories for bug 1103600 at the following links: CVE-2014-3470, RHSA-2014:0625, RHSA-2014:0628, and RHSA-2014-0679

Research In Motion has released a security advisory at the following link: KB36051

VMware has released a security advisory at the following link: VMSA-2014-0006
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to cause an affected application to crash, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to way the affected software performs anonymous ECDH key exchange.

An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted handshake packet to a targeted system. A successful exploit could cause the affected application to crash, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

Administrators are advised to monitor affected systems.
 
Patches/Software
OpenSSL.org has released software updates at the following link: OpenSSL

Apple has released updated software at the following links:
Mac OS X and Mac OS X Server 10.7.5
Security Update 2014-004 (Lion)
Security Update 2014-004 Server (Lion)

Mac OS X 10.8.5
Security Update 2014-004 (Mountain Lion)

Mac OS X 10.9.5
OS X Mavericks 10.9.5 Update
OS X Mavericks 10.9.5 Update (Combo)

FreeBSD has released patches and instructions for installing the patches in their security advisory, which is linked from the "Vendor Announcements" section of this alert.

HP has released updated software at the following links: HP has released a fix for registered users at the following link: HP Operations Analytics

HP has advised the users to install the following SPR:
T0910H01^AAK (NonStop SSL)

Oracle has released updated software for registered customers at the following link: Solaris 11.1.20.5.0

Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.

Research In Motion customers are advised to follow the resolution steps mentioned in the vendor advisory to mitigate this vulnerability.

VMware has released a patch at the following link:
 
Alert History
 

Version 11, September 19, 2014, 8:56 AM: Apple has released a security advisory and updated software to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 10, July 14, 2014, 9:08 AM: HP has released an additional security bulletin and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 9, July 9, 2014, 9:04 AM: HP has released an additional security bulletin and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 8, June 25, 2014, 9:05 AM: BlackBerry has released a security advisory and updated software to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 7, June 24, 2014, 8:47 AM: Oracle has released a security blog and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 6, June 19, 2014, 9:45 AM: HP has released an additional security bulletin and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 5, June 13, 2014, 9:45 AM: HP has released a security advisory and updated software to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 4, June 12, 2014, 12:10 PM: VMware has released a security advisory and updated software to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 3, June 11, 2014, 10:09 AM: Red Hat has released an additional security advisory and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 2, June 9, 2014, 11:17 AM: Blue Coat has released a security advisory and software updates to address the OpenSSL TLS client ECDH ciphersuite denial of service vulnerability.

Version 1, June 6, 2014, 9:17 AM: OpenSSL contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition on a targeted system. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
OpenSSLopenssl 0.9.8 Base | 0.9.8a Base | 0.9.8b Base | 0.9.8c Base | 0.9.8d Base | 0.9.8e Base | 0.9.8f Base | 0.9.8g Base | 0.9.8h Base | 0.9.8i Base | 0.9.8j Base | 0.9.8k Base | 0.9.8l Base | 0.9.8m Base | 0.9.8n Base | 0.9.8o Base | 0.9.8p Base | 0.9.8q Base | 0.9.8r Base | 0.9.8s Base | 0.9.8t Base | 0.9.8u Base | 0.9.8v Base | 0.9.8w Base | 0.9.8x Base | 1.0.0 Base | 1.0.0a Base | 1.0.0b Base | 1.0.0c Base | 1.0.0d Base | 1.0.0e Base | 1.0.0f Base | 1.0.0g Base | 1.0.0h Base | 1.0.0i Base | 1.0.0j Base | 1.0.0k Base | 1.0.1 Base | 1.0.1a Base | 1.0.1b Base | 1.0.1c Base | 1.0.1d Base | 1.0.1e Base | 1.0.1f Base | 1.0.1g Base

Associated Products:
AppleMac OS X 10.7.1 Base | 10.7.2 Base | 10.7.3 Base | 10.7.4 Base | 10.7.5 Base | 10.8.5 Base | 10.9 Base | 10.9.1 Base | 10.9.2 Base | 10.9.3 Base | 10.9.4 Base
AppleMac OS X Server 10.7.1 Base | 10.7.2 Base | 10.7.3 Base | 10.7.4 Base | 10.7.5 Base
BlackBerryBlackBerry OS 10 Base
BlackBerrySecure Work Space for iOS and Android Original Release Base
Blue Coat Systems, Inc.Security Analytics Platform 6.0 Base | 7.0 Base
Blue Coat Systems, Inc.IntelligenceCenter 3.2 Base, .1
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 8.4 Base | 9.0 Base | 9.1 Base | 9.2 Base | 9.3 Base | 10.0 Base
HPHP NonStop H06 .23.00, .22.00, .22.01, .24.00, .26, .26.01, .27, .28 | J06 .11.00, .11.01, .12.00, .15.01, .17
HPHP SSL for OpenVMS 1.4 Base, -467, -471
HPHP-UX 11.11/11i Base | 11.23 Base | 11.31 Base
HPOperations Analytics 2.0 Base | 2.1 Base
Oracle CorporationSolaris 11.1 Base
Red Hat, Inc.Red Hat Enterprise Linux 7 Base
Red Hat, Inc.Red Hat Enterprise Linux Server AUS 6.5 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Desktop 6 IA-32, x86_64
Red Hat, Inc.Red Hat Enterprise Linux HPC Node 6 x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server 6 IA-32, PPC, PPC 64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Server EUS 6.5.z IA-32, PPC, PPC64, s390, s390x, x86_64
Red Hat, Inc.Red Hat Enterprise Linux Workstation 6 IA-32, x86_64
Red Hat, Inc.Red Hat Storage Server 2.1 x86_64
VMware, Inc.VMware ESXi 4.0 Base | 4.1 Base | 5.0 Base | 5.1 Base | 5.5 Base




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