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Severity
High
Title
Message Storage Server Events Arbitrary Command Execution
Description
The Avaya Messaging Storage Server (MSS) Messaging Administration interface allows authenticated users to configure a wide variety of system parameters. The user which accesses the interface, while an administrator of the Avaya configuration, is not an administrator on the system itself.
It is possible to exploit a total of six separate flaws in the administration interface while configuring the server events form to execute arbitrary system commands as the user “vexvm”. Details
Category
Code Execution
Vendor
Avaya
Product
Communication Manager 3.1.x
Released
2008-06-25
updated
2008-06-25
Response
Attempting to address the issue
Recommendations
To completely address the issue requires a patch from Avaya. In the short term it is recommended that a VoIP aware IPS product, such as VoIPguard, with signatures to detect attempts to exploit this issue, be implemented to prevent it from being exploited. Implementing best practices can limit the exposure of this issue. Therefore it is recommended that only authorized systems and users be allowed to connect to the administration interface and to the system via a remote access mechanism such as SSH.
Administrators with root access to the system may wish to temporarily disable this function in order to prevent it from being exploited. However, implementing this workaround may affect your ability to obtain support from Avaya.
Avaya customers with a valid support agreement may wish to speak with their support contact in order to obtain further vendor details. Tracking Id
VSRAV-2008-005
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Each line represents an individual vulnerability or group of vulnerabilities. For example, "UCM Multiple Hardcoded Passwords" is presented here in a single line but was reported to Nortel as sixteen (16) individual vulnerabilities.
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