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Vulnerability Alert

OpenSSL do_ssl3_write NULL Pointer Dereference Remote Denial of Service Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:34106
Version:10
First Published:2014 May 06 16:07 GMT
Last Published:2014 June 25 13:05 GMT
Port: Not available
CVE:CVE-2014-0198
BugTraq ID:67193
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.8
 
Version Summary:BlackBerry has released a security advisory and updated software to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.
 
 
Description
A vulnerability in OpenSSL could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to a NULL pointer dereference error while handling user-supplied packets. An attacker could exploit the vulnerability by transmitting crafted packets to the targeted system. Processing the packets could allow the attacker to cause a DoS condition.

OpenSSL has confirmed the vulnerability and released software updates.
 
Warning Indicators
OpenSSL versions 1.0.1g and prior are vulnerable.
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may need access to trusted or internal networks to transmit crafted packets to the targeted system. This access requirement may limit the likelihood of a successful exploit.

This vulnerability is exploitable only when the affected software versions have the SSL_MODE_RELEASE_BUFFERS mode enabled.
 
Vendor Announcements
OpenSSL has released a bug report at the following link: NULL pointer dereference with SSL_MODE_RELEASE_BUFFERS

BlackBerry has released a security advisory at the following link: KB36051

Bluecoat has released an advisory at the following link: SA80

FreeBSD has released a VuXML document and a security advisory at the following links: OpenSSL -- NULL pointer dereference / DoS and FreeBSD-SA-14:10

Oracle has released a security blog at the following link: CVE-2014-0198

Red Hat has released an official CVE statement and security advisories for bug 1093837 at the following links: CVE-2014-0198, RHSA-2014:0625, RHSA-2014:0628
and RHSA-2014:0679

VMware has released  a security advisory at the following link: VMSA-2014-0006
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to cause the OpenSSL service to crash, leading to a DoS condition.
 
Technical Information
The vulnerability is in the do_ssl3_write() function of the ssl/s3_pkt.c source file due to improper handling of memory operations.

An unauthenticated, remote attacker could exploit the vulnerability by transmitting crafted packets to the targeted system. Processing the packets may cause a NULL pointer dereference error and could cause the affected software to terminate unexpectedly.
 
Safeguards
Administrators are advised to contact the vendor for future updates and releases or apply the third-party updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.
 
Patches/Software
OpenSSL.org has released updated software at the following links: BlackBerry customers are advised to follow the resolution steps mentioned in the vendor advisory to mitigate this vulnerability.

Bluecoat has released software updates for registered users at the following link:
CentOS packages can be updated using the up2date or yum command.

FreeBSD has released ports collection updates and a software patch at the following links: 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.


VMware has released a patch at the following link:

Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
4187/0OpenSSL Information DisclosureS7862014 Apr 10 
4187/1OpenSSL Information DisclosureS7862014 Apr 10 
4187/2OpenSSL Information DisclosureS7862014 Apr 10 
4187/3OpenSSL Information DisclosureS7872014 Apr 15 
4187/4OpenSSL Information DisclosureS7882014 Apr 17 
 
Alert History
 

Version 9, June 24, 2014, 8:47 AM: Oracle has released a security blog and updated software to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 8, June 12, 2014, 9:56 AM: VMware has released a security advisory and updated software to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 7, June 11, 2014, 8:56 AM: Red Hat has released an additional security advisory and updated packages to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 6, June 9, 2014, 9:06 AM: Bluecoat has released a security advisory and updated software to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability. CentOS has released packages to address the vulnerability.

Version 5, June 6, 2014, 9:25 AM: Red Hat has released security advisories and updated packages to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 4, May 14, 2014, 9:55 AM: FreeBSD has released an additional security advisory and a software patch to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 3, May 13, 2014, 8:25 AM: Additional information regarding vulnerable products for the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability is available.

Version 2, May 7, 2014, 9:18 AM: FreeBSD has released a VuXML document and an updated ports collection to address the OpenSSL do_ssl3_write NULL pointer dereference remote denial of service vulnerability.

Version 1, May 6, 2014, 12:07 PM: OpenSSL contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Third-party updates are available.


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

Primary Products:
OpenSSLopenssl Original Release 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:
BlackBerryBlackBerry OS 10 Base
Blue Coat Systems, Inc.ProxySG 4.3 Base | 6.5 Base, .1.1, .2.1, .3.1, .3.5
CentOS ProjectCentOS 6 .0 i386, .0 x86_64, .1 i386, .1 x86_64, .2 i386, .2 x86_64
FreeBSD ProjectFreeBSD 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 9.0 Base | 9.1 Base | 9.2 Base | 10.0 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 IA-32, 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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