NetSaro Enterprise Messenger Server Administration Console Weak Cryptographic Password Storage Vulnerability

Solutionary ID: SERT-VDN-1010

Risk Rating: Medium

CVE ID: CVE-2011-3692

Product: NetSaro Enterprise Messenger Serve

Application Vendor: SEM Software

Vendor URL: http://www.netsaro.com

Date discovered: 6/30/2011

Discovered by: Jose Hernandez, Rob Kraus and the Solutionary Engineering Research Team (SERT)

Vendor notification date: 7/01/2011

Vendor response date: No Response

Vendor acknowledgment date: No Response

Public disclosure date: 8/15/2011

Type of vulnerability: Weak Cryptography - Design Flaw

Exploit Vectors: Local

Vulnerability Description: A vulnerability exists in the NetSaro Enterprise Messenger Server application allowing an attacker to easily decrypt passwords used to authenticate to the application. The application implements Base64 encoding to obfuscate the values of plaintext passwords used for logging into the server administration console. This is a second level attack that requires access to the password files stored within the application root directory. An attacker who has previously compromised the host operating system or achieved direct access to the configuration.xml file found in the "NetSaro Enterprise Server" directory can obtain the encoded user credentials and decrypt them using readily available Base64 decoding tools. More information about this class of vulnerability can be obtained by visiting: Use of a Broken or Risky Cryptographic Algorithm – CWE 327

Tested on: Windows XP, SP3, with NetSaro Enterprise Messenger Server v2.0 default installation.

Affected software versions: NetSaro Enterprise Messenger Server v2.0 (previous versions may also be vulnerable)

Impact: In cases where access to the configuration.xml file is obtained an attacker can decrypt all username and password values and reuse them against other systems within the network.

Fixed in: None Available

Remediation guidelines: Limit access to this hosts running the software and apply security patches as they become available.