Yoono extension before 6.1.1 for Firefox performs certain operations with chrome privileges, which allows user-assisted remote attackers to execute arbitrary commands and perform cross-domain scripting attacks via DOM event handlers such as onload.
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Per info from the following advisory:
Raised the score to CIA:complete
NVD received information from Yoono development team on December 4, 2009 that the affected versions are in fact 6.1.0 and previous. NVD adjusted affected versions accordingly because of this new information.
NVD received information from Yoono development team on December 4, 2009 that the fixed version is in fact 6.1.1. A patch can be found at the following URL:
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