modules/webaudio/BiquadDSPKernel.cpp in the Web Audio API implementation in Blink, as used in Google Chrome before 37.0.2062.94, does not properly consider concurrent threads during attempts to update biquad filter coefficients, which allows remote attackers to cause a denial of service (read of uninitialized memory) via crafted API calls.
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service
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