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mozillaMozilla FoundationMFSA2015-63
HistoryJul 02, 2015 - 12:00 a.m.

Use-after-free in Content Policy due to microtask execution error — Mozilla

2015-07-0200:00:00
Mozilla Foundation
www.mozilla.org
28

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.044 Low

EPSS

Percentile

92.3%

Security researcher Herre reported a use-after-free vulnerability when a Content Policy modifies the Document Object Model to remove a DOM object, which is then used afterwards due to an error in microtask implementation. This leads to an exploitable crash.

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.044 Low

EPSS

Percentile

92.3%