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mozillaMozilla FoundationMFSA2012-83
HistoryOct 09, 2012 - 12:00 a.m.

Chrome Object Wrapper (COW) does not disallow access to privileged functions or properties — Mozilla

2012-10-0900:00:00
Mozilla Foundation
www.mozilla.org
22

9.3 High

CVSS2

Attack Vector

NETWORK

Attack 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

0.015 Low

EPSS

Percentile

86.8%

Security researcher Mariusz Mlynski reported that when InstallTrigger fails, it throws an error wrapped in a Chrome Object Wrapper (COW) that fails to specify exposed properties. These can then be added to the resulting object by an attacker, allowing access to chrome privileged functions through script.

Affected configurations

Vulners
Node
mozillafirefoxRange<16
OR
mozillafirefox_esrRange<10.0.8
OR
mozillaseamonkeyRange<2.13
OR
mozillathunderbirdRange<16
OR
mozillathunderbird_esrRange<10.0.8

9.3 High

CVSS2

Attack Vector

NETWORK

Attack 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

0.015 Low

EPSS

Percentile

86.8%