Splunk Enterprise 6.1.5 addresses two vulnerabilities

Description

Splunk Enterprise 6.6.3 and Splunk Light 6.6.3 address multiple vulnerabilities

• OpenSSL session ticket memory leak (SPL-91948, CVE-2014-3567)
• TLS protocol enhancements related to POODLE (SPL-92061, CVE-2014-3566)

At the time of this announcement, Splunk is not aware of any cases where these vulnerabilities have been actively exploited. Previous Product Security Announcements can be found on our Splunk Product Security Portal. Use SPL numbers when referencing issues in communication with Splunk. If there is no CVE Identifier listed with a vulnerability, it will be added once it is assigned by a CVE Numbering Authority. To standardize the calculation of severity scores for each vulnerability, when appropriate, Splunk uses Common Vulnerability Scoring System version 2.

Affected Products and Components

These vulnerabilities affect all versions of Splunk Enterprise 6.1.* before 6.1.5:

• OpenSSL session ticket memory leak (SPL-91948, CVE-2014-3567)
• This does affect: All Splunk Enterprise components.
• TLS protocol enhancements related to POODLE (SPL-92061, CVE-2014-3566)
• This does affect: All Splunk Enterprise components.

  Mitigation and Upgrades

To mitigate these issues, Splunk recommends upgrading to the latest release and applying as many of the Hardening Standards from the Securing Splunk documentation as are relevant to your environment. Splunk Enterprise and Splunk Light releases are cumulative, meaning that future releases will contain fixes to these vulnerabilities, new features and other bug fixes.

Vulnerability Descriptions and Ratings

OpenSSL session ticket memory leak (SPL-91948, CVE-2014-3567)

Description: OpenSSL versions before 1.0.1j and 0.9.8zc do not properly handle invalid session tickets. When encountering an invalid session ticket, OpenSSL fails to free memory. This vulnerability could be used to cause a Denial of Service to Splunk Enterprise.

CVSS Severity (version 2.0):

CVSS Base Score 4.3

CVSS Impact Subscore 2.9

CVSS Exploitability Subscore 8.6

Overall CVSS Score 4.3

TLS protocol enhancements related to POODLE (SPL-92061, CVE-2014-3566)

Description: Due to weaknesses in SSLv3, including the POODLE attack, Splunk Enterprise has added the sslVersions attribute to allow administrators to control what versions of TLS/SSL are supported. For further information, refer to the Splunk Enterprise Documentation. Additionally, TLS_FALLBACK_SCSV support is now included to mitigate browser downgrade attacks.

CVSS Severity (version 2.0):

CVSS Base Score 4.3

CVSS Impact Subscore 2.9

CVSS Exploitability Subscore 8.6

Overall CVSS Score 4.3

Document History

• 2014-Nov-11: Rev 1. Initial Release