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AUSCERT External Security Bulletin Redistribution
ESB-2015.1796
SOL16920: OpenSSL vulnerability CVE-2014-8176
8 July 2015
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AusCERT Security Bulletin Summary
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Product: F5 products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-8176
Reference: ASB-2015.0065
ESB-2015.1699
ESB-2015.1569
ESB-2015.1561
ESB-2015.1557
ESB-2015.1540
ESB-2015.1544.2
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/16000/900/sol16920.html
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SOL16920: OpenSSL vulnerability CVE-2014-8176
Security Advisory
Original Publication Date: 07/07/2015
Description
The dtls1_clear_queues function in ssl/d1_lib.c in OpenSSL before 0.9.8za,
1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h frees data structures without
considering that application data can arrive between a ChangeCipherSpec
message and a Finished message, which allows remote DTLS peers to cause a
denial of service (memory corruption and application crash) or possibly have
unspecified other impact via unexpected application data. (CVE-2014-8176)
Impact
A malicious Datagram Transport Layer Security (DTLS) client or server can send
a specially crafted message to the peer, which may cause the application to
stop responding or can result in arbitrary code execution.
Status
F5 Product Development has assigned ID 527641 (BIG-IP) to this vulnerability,
and has evaluated the currently supported releases for potential
vulnerability.
To determine if your release is known to be vulnerable, the components or
features that are affected by the vulnerability, and for information about
releases or hotfixes that address the vulnerability, refer to the following
table:
Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature
BIG-IP LTM 11.5.0 - 11.5.1 11.6.0 , 11.5.2 - 11.5.3, 11.5.1 HF3 High Control plane:
11.5.0 HF4, 11.0.0-11.4.1, The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.0.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
10.1.0 - 10.2.4
BIG-IP AAM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
11.5.0 HF4, 11.0.0 - 11.4.1, The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.0.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
10.1.0 - 10.2.4
BIG-IP AFM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
11.5.0 HF4, 11.3.0 - 11.4.1 The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.3.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
BIG-IP 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
Analytics 11.5.0 HF4, 11.0.0 - 11.4.1 The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
BIG-IP APM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
11.5.0 HF4, 11.0.0 - 11.4.1, The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.0.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
10.1.0 - 10.2.4
BIG-IP ASM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3 High Control plane:
11.5.0 HF4, 11.0.0 - 11.4.1 The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.0.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
10.1.0 - 10.2.4
BIG-IP Edge 11.0.0 - 11.3.0 None High Data plane:
Gateway 10.1.0 - 10.2.4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
BIG-IP GTM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
11.5.0 HF4, 11.0.0 - 11.4.1 The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
BIG-IP Link 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3 High Control plane:
Controller 11.5.0 HF4, 11.0.0 - 11.4.1, The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
10.1.0 - 10.2.4
BIG-IP PEM 11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Control plane:
11.5.0 HF4, 11.3.0 - 11.4.1 The BIG-IP sod daemon is vulnerable if using Common Criteria mode, or when the failover.secure* database variable is enabled.
11.5.0 - 11.5.1 11.6.0, 11.5.2 - 11.5.3, 11.5.1 HF3, High Data plane:
11.3.0 - 11.4.1 11.5.0 HF4 UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
BIG-IP PSM 11.0.0 - 11.4.1
10.1.0 - 10.2.4 None High Data plane:
UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
BIG-IP
WebAccelerator 11.0.0 - 11.3.0
10.1.0 - 10.2.4 None High Data plane:
UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
BIG-IP WOM 11.0.0 - 11.3.0
10.1.0 - 10.2.4 None High Data plane:
UDP virtual servers using Client SSL or Server SSL profiles that enable with COMPAT ciphers are vulnerable.
Note: As of February 17, 2015, AskF5 Security Advisory articles include the
Severity value. Security Advisory articles published before this date do not
list a Severity value.
* The failover.secure system database variable is only available in BIG-IP
11.5.0 and later, and is disabled by default. However, Common Criteria mode
enables the failover.secure database variable.
Recommended Action
If the previous table lists a version in the Versions known to be not
vulnerable column, you can eliminate this vulnerability by upgrading to the
listed version. If the listed version is older than the version you are
currently running, or if the table does not list any version in the column,
then no upgrade candidate currently exists.
F5 responds to vulnerabilities in accordance with the Severity values
published in the previous table. The Severity values and other security
vulnerability parameters are defined in SOL4602: Overview of the F5 security
vulnerability response policy.
BIG-IP
To mitigate this vulnerability for vulnerable BIG-IP versions, you can disable
the failover.secure system database variable to prevent exposure. For UDP
virtual servers using Client SSL or Server SSL profiles, the system is only
vulnerable to this issue when configured with COMPAT ciphers.
For more information about SSL profiles and cipher configuration, refer to the
following articles:
SOL13187: COMPAT SSL ciphers are no longer included in standard cipher strings
SOL13171: Configuring the cipher strength for SSL profiles (11.x)
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
SOL4918: Overview of the F5 critical issue hotfix policy
SOL167: Downloading software and firmware from F5
SOL13123: Managing BIG-IP product hotfixes (11.x)
SOL9502: BIG-IP hotfix matrix
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