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AUSCERT External Security Bulletin Redistribution
ESB-2012.0976
A number of vulnerabilities have been identified in IBM
Tivoli Directory Server
11 October 2012
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Tivoli Directory Server
Publisher: IBM
Operating System: Windows
AIX
HP-UX
Linux variants
Solaris
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2012-2203 CVE-2012-2191 CVE-2012-2190
Reference: ESB-2012.0934
ESB-2012.0933
ESB-2012.0930
ESB-2012.0929
ESB-2012.0916
ESB-2012.0801
ESB-2012.0726
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21609029
http://www-01.ibm.com/support/docview.wss?uid=swg21609030
http://www-01.ibm.com/support/docview.wss?uid=swg21609141
Comment: This bulletin contains three (3) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: GSKit SSL/TLS Record Length vulnerability in Tivoli
Directory Server (CVE-2012-2191)
Flash (Alert)
Abstract
A vulnerability has been identified in the GSKit component utilized by Tivoli
Directory Server (TDS). A specifically crafted malformed SSL/TLS data packet
can cause the TDS server using GSKit to segmentation fault.. Remediation for
the issue consists of updating GSKit 7 to version 7.0.4.41 or higher, and GSKit
8 to version 8.0.14.22 or higher.
Content
VULNERABILITY DETAILS
CVE ID: CVE-2012-2191
DESCRIPTION:
TDS uses GSKit for SSL/TLS connections. The GSKit implementation of CBC and
AEAD Cipher Suites are vulnerable to an attack from a specifically crafted
malformed SSL/TLS data packet. There are several ciphers supported by TDS that
are included in these Suites. An attacker would need to act as a
man-in-the-middle, intercepting the SSL data stream between any LDAP client
(such as ldapsearch) and a TDS server that was using an affected cipher, and
inject a malformed data packet into the stream. Were an attacker able to do so,
they could cause the TDS server process to crash. The attack does not require
local network access nor does it require authentication, but some degree of
specialized knowledge and techniques are required. An exploit would not impact
the confidentiality of information or the integrity of data, however
accessibility of the system could be compromised.
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/75996 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
AFFECTED PLATFORMS
All GSKit 7.0.x.x builds up to and including 7.0.4.40
All GSKit 8.0.14.x up to and including 8.0.14.21
All GSKit 8.0.15.x up to and including 8.0.15.3
REMEDIATION:
Tivoli Directory Server versions 6.0, 6.1 or 6.2 using GSKit 7 should update
GSKit to version 7.0.4.41 or later. The following document explains how to
obtain and install updates to GSKit 7 for Tivoli Directory Server:
GSKit V7 - Install, Uninstall and Upgrade instructions for Tivoli Directory
Server
Tivoli Directory Server versions 6.3 using GSKit 8 should update GSKit to
version 8.0.14.22 or later. The following document explains how to obtain and
install updates to GSKit 8 for Tivoli Directory Server:
GSKit V8 - Install, Uninstall and Upgrade instructions for Tivoli Directory
Server
WORKAROUND(S):
No workaround
MITIGATION(S):
No mitigation
REFERENCES:
Complete CVSS Guide
CVSS on-line Calculator V2
X-Force Database
CVE-2012-2191
RELATED INFORMATION:
IBM Product Security Incident Response Program
IBM Tivoli Directory Server Support
Date of Creation/Update Summary of Changes
2012/10/04 created
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST),
the Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
Product Alias/Synonym
LDAP TDS ITDS IDS GSKit
Copyright and trademark information
IBM, the IBM logo and ibm.com are trademarks of International Business Machines
Corp., registered in many jurisdictions worldwide. Other product and service
names might be trademarks of IBM or other companies. A current list of IBM
trademarks is available on the Web at "Copyright and trademark information" at
www.ibm.com/legal/copytrade.shtml.
- ------------------------------------------------------------------------------
Security Bulletin: GSKit SSL/TLS handshake vulnerability in Tivoli Directory
Server (CVE-2012-2190)
Flash (Alert)
Abstract
A vulnerability has been identified in the GSKit 7 component utilized by Tivoli
Directory Server (TDS) version 6.0, 6.1 or 6.2. A specifically crafted
malformed SSL/TLS data packet can cause a TDS server using GSKit 7 to
segmentation fault.. Remediation for the issue consists of updating GSKit 7 to
version 7.0.4.40 or higher.
Content
VULNERABILITY DETAILS
CVE ID: CVE-2012-2190
DESCRIPTION:
When a client attempts to establish an SSL/TLS connection, the client and
server negotiate what type of cypher suite to use and whether to trust each
other. This negotiation is called the "handshake". TDS 6.0, 6.1 and 6.2 use
GSKit 7 for SSL/TLS connections. GSKit 7 is vulnerable to an attack from a
specifically crafted malformed SSL/TLS data packet during the handshake. An
attacker would need to send a malformed data packet to the server during the
SSL/TLS handshake negotiation. Were an attacker able to do so, they could cause
the TDS server process to crash. The attack does not require local network
access nor does it require authentication, but some degree of specialized
knowledge and techniques are required. An exploit would not impact the
confidentiality of information or the integrity of data, however accessibility
of the system could be compromised.
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/75994 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
AFFECTED PLATFORMS
Tivoli Directory Server version 6.2 or earlier for 64-bit platforms excluding
Windows and Solaris-SPARC. The following TDS platforms are vulnerable if they
are not updated to use GSKit 7.0.4.40 or later.
Platform Bits Vulnerable TDS versions
AIX 64 Yes 6.0.0*-ITDS-AIX-*
6.1.0*-ITDS-AIX-*
6.2.0*-ITDS-AIX-*
HP-UX (IA64) 64 Yes 6.0.0*-ITDS-HPUXIA64-*
6.1.0*-ITDS-HPUXIA64-*
6.2.0*-ITDS-HPUXIA64-*
HP-UX (PA-RISC) 64 Yes 6.1.0*-ITDS-HPUXPARISC-*
Linux (x86-64) 64 Yes 6.1.0*-ITDS-LinuxX64-*
6.2.0*-ITDS-LinuxX64-*
Linux i/p 64 Yes 6.1.0*-ITDS-Linuxip-*
6.2.0*-ITDS-Linuxip-*
Linux s390 64 Yes 6.1.0*-ITDS-Linuxz-*
6.2.0*-ITDS-Linuxz-*
Solaris (x86-64)64 Yes 6.0.0*-ITDS-SolarisX64-*
6.1.0*-ITDS-SolarisX64-*
6.2.0*-ITDS-SolarisX64-*
The following TDS platforms are NOT vulnerable:
Platform Bits Vulnerable TDS versions
HP-UX (PA-RISC) 32 No 6.0.0*-ITDS-HPUXPARISC-*
Linux (IA32) 32 No 6.0.0*-ITDS-Linux32-*
6.1.0*-ITDS-Linux32-*
6.2.0*-ITDS-Linux32-*
Linux i/p 32 No 6.0.0*-ITDS-Linuxip32-*
Linux s390 31 No 6.0.0*-ITDS-Linuxz31-*
Solaris (SPARC) 32 No 6.0.0*-ITDS-SolarisSparc-*
Solaris (SPARC) 64 No 6.1.0*-ITDS-SolarisSparc-*
6.2.0*-ITDS-SolarisSparc-*
Windows (IA32) 32 No 6.0.0*-ITDS-Win32-*
6.1.0*-ITDS-Win32-*
6.2.0*-ITDS-Win32-*
Windows (x86-64)64 No 6.1.0*-ITDS-WinX64-*
6.2.0*-ITDS-WinX64-*
REMEDIATION:
Tivoli Directory Server versions 6.0, 6.1 or 6.2 using GSKit 7 should update
GSKit to version 7.0.4.40 or later. The following document explains how to
obtain and install updates to GSKit 7 for Tivoli Directory Server:
GSKit V7 - Install, Uninstall and Upgrade instructions for Tivoli Directory
Server
WORKAROUND(S):
The problem can be protected against by setting the following environment
variables in the parent shell before starting Tivoli Directory Server:
GSK_V3_SIDCACHE_SIZE=0
GSK_V2_SIDCACHE_SIZE=0
MITIGATION(S):
See "Workaround(s)"
REFERENCES:
Complete CVSS Guide
CVSS on-line Calculator V2
X-Force Database
CVE-2012-2190
RELATED INFORMATION:
IBM Product Security Incident Response Program
IBM Tivoli Directory Server Support
Date of Creation/Update Summary of Changes
2012/10/04 created
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST),
the Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
Historical Number
XX04507
Product Alias/Synonym
LDAP TDS ITDS IDS GSKit
Copyright and trademark information
IBM, the IBM logo and ibm.com are trademarks of International Business Machines
Corp., registered in many jurisdictions worldwide. Other product and service
names might be trademarks of IBM or other companies. A current list of IBM
trademarks is available on the Web at "Copyright and trademark information" at
www.ibm.com/legal/copytrade.shtml.
- ------------------------------------------------------------------------------
Security Bulletin: GSKit Trust Anchor vulnerability in Tivoli Directory Server
(CVE-2012-2203)
Flash (Alert)
Abstract
A vulnerability has been identified in the GSKit component utilized by Tivoli
Directory Server (TDS) such that trust anchors can be inserted without
detection. Remediation for the issue consists of updating GSKit 7 to version
7.0.4.41 or higher, and GSKit 8 to version 8.0.14.22 or higher.
Content
VULNERABILITY DETAILS
CVE ID: CVE-2012-2203
DESCRIPTION:
A vulnerability has been discovered with the importing of certificates when a
PKCS#12 file is the source. Such certificates are used in a number of places by
TDS client and server components and the GSKit components used by TDS support
importing PKCS#12 files. The vulnerability exists because trust anchors can be
inserted without detection. Should someone with file level access to the
PKCS#12 source file succeed in adding additional trust anchors prior to the
import, this may result in a successful SSL/TLS connection that would normally
have been rejected due to a missing chain of trust. For example, an attacker
could use a crafted certificate to establish a TLS connection to the TDS server
because the certification authority trust anchor in the TDS server certificate
had been compromised. The attack requires access to the PKCS#12 source file and
sufficient permissions to modify that file. Specialized knowledge and
techniques are required. An exploit would not impact accessibility of the
compromised system, but it could impact the confidentiality of information and
the integrity of data.
CVSS Base Score: 5.8
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/77280 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)
AFFECTED PLATFORMS
All GSKit 7.0.x.x builds up to and including 7.0.4.40
All GSKit 8.0.14.x up to and including 8.0.14.21
All GSKit 8.0.15.x up to and including 8.0.15.3
REMEDIATION:
Tivoli Directory Server versions 6.0, 6.1 or 6.2 using GSKit 7 should update
GSKit to version 7.0.4.41 or later. The following document explains how to
obtain and install updates to GSKit 7 for Tivoli Directory Server:
GSKit V7 - Install, Uninstall and Upgrade instructions for Tivoli Directory
Server
Tivoli Directory Server versions 6.3 using GSKit 8 should update GSKit to
version 8.0.14.22 or later. The following document explains how to obtain and
install updates to GSKit 8 for Tivoli Directory Server:
GSKit V8 - Install, Uninstall and Upgrade instructions for Tivoli Directory
Server
WORKAROUND(S):
No workaround
MITIGATION(S):
No mitigation
REFERENCES:
Complete CVSS Guide
CVSS on-line Calculator V2
X-Force Database
CVE-2012-2203
RELATED INFORMATION:
IBM Product Security Incident Response Program
IBM Tivoli Directory Server Support
Date of Creation/Update Summary of Changes
2012/10/04 created
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST),
the Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
Product Alias/Synonym
LDAP TDS ITDS IDS GSKit
Copyright and trademark information
IBM, the IBM logo and ibm.com are trademarks of International Business Machines
Corp., registered in many jurisdictions worldwide. Other product and service
names might be trademarks of IBM or other companies. A current list of IBM
trademarks is available on the Web at "Copyright and trademark information" at
www.ibm.com/legal/copytrade.shtml.
- --------------------------END INCLUDED TEXT--------------------
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