Security Finder

You can use the Security Finder to search for security issues and their impact on Riverbed products. This page is continuously updated, displaying the most current public security issues first. The search box can be used to look up records by specific CVE numbers or relevant search word, e.g. Apache, 8.5.0, Workaround. For additional search tips, refer to article S16165. Security issues listed here are categorized into three groups: fixed, workaround recommended and not applicable.

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For search tips, read article S16165.

OpenSSH before 7.3 has the following vulnerabilities, described in http://www.openssh.com/txt/release-7.3: CVE-2016-6515, CVE-2016-6210, CVE-2015-8325. (Bug #265375)

Product

SteelHead (Appliance)

Fixed in Version:

steelhead 9.1.4, steelhead 9.5.0, steelhead 9.2.2

Last Modified:

2017-06-01

Summary

Details:

OpenSSH before 7.3 has the following vulnerabilities, described in http://www.openssh.com/txt/release-7.3:

CVE-2016-6515: sshd(8): Mitigate a potential denial-of-service attack against the system's crypt(3) function via sshd(8). An attacker could send very long passwords that would cause excessive CPU use in crypt(3). sshd(8) now refuses to accept password authentication requests of length greater than 1024 characters. Independently reported by Tomas Kuthan (Oracle), Andres Rojas and Javier Nieto.

CVE-2016-6210: sshd(8): Mitigate timing differences in password authentication that could be used to discern valid from invalid account names when long passwords were sent and particular password hashing algorithms are in use on the server. Reported by EddieEzra.Harari at verint.com

CVE-2015-8325: sshd(8): (portable only) Ignore PAM environment vars when UseLogin=yes. If PAM is configured to read user-specified environment variables and UseLogin=yes in sshd_config, then a hostile local user may attack /bin/login via LD_PRELOAD or similar environment variables set via PAM. Found by Shayan Sadigh.

Fix:

Upgraded to OpenSSH 7.3p1 to fix these vulnerabilities.

Recommendation:

Upgrade to a version of the software with the fix.

The OpenSSH project has announced that the following features are deprecated for security reasons and will be completely removed in a near future release:

* RSA keys smaller than 1024 bits.
* SSH version 1 protocol.

Customers should ensure that all SSH clients and servers use the SSH version 2 protocol, for which SSH software has been available since 2006. SteelHead appliances default to using only the SSH version 2 protocol and will only allow the SSH version 1 protocol if "no ssh server v2-only" is used. This command will be removed in the future when SSH version 1 protocol support is removed from OpenSSH.

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