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mozillaMozilla FoundationMFSA2013-14
HistoryJan 08, 2013 - 12:00 a.m.

Chrome Object Wrapper (COW) bypass through changing prototype — Mozilla

2013-01-0800:00:00
Mozilla Foundation
www.mozilla.org
24

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.095 Low

EPSS

Percentile

94.7%

Security researcher Mariusz Mlynski reported that it is possible to change the prototype of an object and bypass Chrome Object Wrappers (COW) to gain access to chrome privileged functions. This could allow for arbitrary code execution.

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.095 Low

EPSS

Percentile

94.7%