OpenSSL ClientHello handshake information disclosure

openssl-clienthellohs-info-disclosure (68221) The risk level is classified as MediumMedium Risk

Description:

OpenSSL could allow a remote attacker to obtain sensitive information. By sending a specially-crafted ClientHello handshake message, a remote attacker could exploit this vulnerability to disclose the contents of parsed OCSP extensions and possibly cause a denial of service.

*CVSS:

Base Score: 5.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 4.3
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Apply Apple Security Update 2011-004 or upgrade to the latest version of Mac OS X (10.6.8 or later), available from the Apple Web site. See References.

Refer to the appropriate IBM Security Bulletin for patch, upgrade or suggested workaround information. See References.

For other distributions:
Apply the appropriate update for your system. See References.

References:

  • Apple Web site: About the security content of Mac OS X v10.6.8 and Security Update 2011-004.
  • IBM SECURITY ADVISORY: Multiple OpenSSL vulnerabilities.
  • IBM Security Bulletin 1619837: IBM InfoSphere Balanced Warehouse C3000, C4000 and D5100 and IBM Smart Analytics System 1050, 2050, 5600 and 5710 are affected by vulnerabilities in OpenSSL.
  • IBM Security Bulletin 1625170: IBM Smart Analytics System 7600, 7700, and 7710 are affected by vulnerabilities in OpenSSL.
  • IBM Security Bulletin 1627934: IBM Sterling Connect:Enterprise for UNIX is affected by multiple vulnerabilities in OpenSSL.
  • IBM Security Bulletin 1633107: IBM Sterling Connect:Express for UNIX is affected by multiple vulnerabilities in OpenSSL.
  • IBM Security Bulletin 1637929: IBM Tivoli Netcool System Service Monitors/Application Service Monitors is affected by multiple OpenSSL vulnerabilities.
  • IBM Security Bulletin 1643698: GSKit Security Vulnerabilities addressed in IBM Tivoli Network Manager 3.8 and 3.9.
  • IBM Security Bulletin 1650623: GSKit Security Vulnerabilities addressed in IBM Tivoli Netcool OMNIbus.
  • IBM Security Bulletin 666105211: HMC OpenSSL Upgrade to Address Cryptographic Vulnerabilities.
  • IBM Security Bulletin S1004564: Storage HMC OpenSSL upgrade to address cryptographic vulnerabilities..
  • BID-46264: OpenSSL OCSP Stapling 'ClientHello' Handshake Message Parsing Security Vulnerability
  • CVE-2011-0014: ssl/t1_lib.c in OpenSSL 0.9.8h through 0.9.8q and 1.0.0 through 1.0.0c allows remote attackers to cause a denial of service (crash), and possibly obtain sensitive information in applications that use OpenSSL, via a malformed ClientHello handshake message that triggers an out-of-bounds memory access, aka OCSP stapling vulnerability.
  • DSA-2162: openssl -- invalid memory access
  • OSVDB ID: 70847: OpenSSL ClientHello Handshake Message Parsing Invalid Memory Access
  • RHSA-2011-0677: Moderate: openssl security, bug fix, and enhancement update
  • SA43227: OpenSSL ClientHello Handshake Message Parsing Vulnerability
  • SA44269: HP Insight Control for Linux Multiple Vulnerabilities
  • SA45054: Apple Mac OS X Multiple Vulnerabilities
  • SA46742: IBM AIX OpenSSL Multiple Vulnerabilities
  • SA47807: Blue Coat Reporter OpenSSL Two Vulnerabilities
  • SA47863: Blue Coat Reporter OpenSSL Two Vulnerabilities
  • SA57353: IBM Storage System DS8870 OpenSSL Multiple Vulnerabilities
  • SUSE-SR:2011:005: SUSE Security Summary Report

Platforms Affected:

  • Apple Mac OS X 10.6
  • Apple Mac OS X 10.6.1
  • Apple Mac OS X 10.6.2
  • Apple Mac OS X 10.6.3
  • Apple Mac OS X 10.6.4
  • Apple Mac OS X 10.6.5
  • Apple Mac OS X 10.6.6
  • Apple Mac OS X 10.6.7
  • Apple Mac OS X Server 10.6
  • Apple Mac OS X Server 10.6.1
  • Apple Mac OS X Server 10.6.2
  • Apple Mac OS X Server 10.6.3
  • Apple Mac OS X Server 10.6.4
  • Apple Mac OS X Server 10.6.5
  • Apple Mac OS X Server 10.6.6
  • Apple Mac OS X Server 10.6.7
  • Blue Coat Systems Blue Coat Reporter 9.1.1
  • Blue Coat Systems Blue Coat Reporter 9.1.5.1
  • IBM AIX 5
  • IBM AIX 6.1
  • IBM AIX 7.1
  • IBM DS8870 7.0
  • IBM DS8870 7.1
  • IBM InfoSphere Balanced Warehouse C3000
  • IBM InfoSphere Balanced Warehouse C4000
  • IBM InfoSphere Balanced Warehouse C5100
  • IBM Netcool System Service Monitor 4.0
  • IBM Power Hardware Management Console 7r7.6.0
  • IBM Smart Analytics System 1050 Linux
  • IBM Smart Analytics System 2050 Linux
  • IBM Smart Analytics System 5600 V1
  • IBM Smart Analytics System 5600 V2
  • IBM Smart Analytics System 5710 9.7
  • IBM Smart Analytics System 7600 9.7
  • IBM Smart Analytics System 7700 9.7
  • IBM Smart Analytics System 7710 9.7
  • IBM Sterling Connect Enterprise for UNIX 1.4
  • IBM Sterling Connect Enterprise for UNIX 1.5
  • IBM Sterling Connect Enterprise for UNIX 2.4
  • IBM Sterling Connect Enterprise for UNIX 2.5
  • IBM Tivoli Netcool/OMNIbus 7.2.1
  • IBM Tivoli Netcool/OMNIbus 7.3.0
  • IBM Tivoli Netcool/OMNIbus 7.3.1
  • IBM Tivoli Netcool/OMNIbus 7.4.0
  • IBM Tivoli Network Manager 3.8 FP7
  • IBM Tivoli Network Manager 3.9 FP3
  • OpenSSL OpenSSL
  • RedHat Enterprise Linux 6 Workstation
  • RedHat Enterprise Linux 6 Server
  • RedHat Enterprise Linux Desktop 6
  • RedHat Enterprise Linux HPC Node 6

Reported:

Jun 23, 2011

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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