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.

CVE-2015-8138, CVE-2015-7973, and CVE-2015-7979: NTP security update. (Bug #250951)

Products:

SteelHead (Appliance), SteelHead Interceptor, SteelCentral Controller for SteelHead (Central Management Console)

Fixed in Version:

cmc 9.1.0e, steelhead 9.1.2a, interceptor 5.5.0, cmc 9.2.0, steelhead 9.2.0

Last Modified:

2016-05-05

Summary

Details:

NTP server before 4.2.8p6 has the following security vulnerabilities:

CVE-2015-8158: Potential Infinite Loop in ntpq
CVE-2015-8138: origin: Zero Origin Timestamp Bypass
CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated broadcast mode
CVE-2015-7978: Stack exhaustion in recursive traversal of restriction list
CVE-2015-7977: reslist NULL pointer dereference
CVE-2015-7976: ntpq saveconfig command allows dangerous characters in filenames
CVE-2015-7975: nextvar() missing length check
CVE-2015-7974: Skeleton Key: Missing key check allows impersonation between authenticated peers
CVE-2015-7973: Deja Vu: Replay attack on authenticated broadcast mode

Of these, CVE-2015-8138, CVE-2015-7973, and CVE-2015-7979 are applicable. CVE-2015-7973, and CVE-2015-7979, are only applicable when authenticated NTP is used.

More details of the CVEs can be found at http://support.ntp.org/bin/view/Main/SecurityNotice

Fix:

We have upgraded the NTP server to 4.2.8p6 to fix these security vulnerabilities.

Recommendation:

Upgrade to a software version with the fix.  If this is not possible, use multiple time sources and avoid placing appliances on untrusted networks to minimize the vulnerability to CVE-2015-8138.

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