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mozillaMozilla FoundationMFSA2013-91
HistorySep 17, 2013 - 12:00 a.m.

User-defined properties on DOM proxies get the wrong "this" object — Mozilla

2013-09-1700:00:00
Mozilla Foundation
www.mozilla.org
26

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.2

Confidence

Low

EPSS

0.005

Percentile

76.8%

Mozilla developer Boris Zbarsky reported that user-defined getters on DOM proxies would incorrectly get the expando object as this. It is unlikely that this is directly exploitable but could lead to JavaScript client or add-on code making incorrect security sensitive decisions based on hacker supplied values.

Affected configurations

Vulners
Node
mozillafirefoxRange<24
OR
mozillafirefox_esrRange<17.0.9
OR
mozillaseamonkeyRange<2.21
OR
mozillathunderbirdRange<24
OR
mozillathunderbird_esrRange<17.0.9
VendorProductVersionCPE
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozillafirefox_esr*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
mozillaseamonkey*cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
mozillathunderbird*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
mozillathunderbird_esr*cpe:2.3:a:mozilla:thunderbird_esr:*:*:*:*:*:*:*:*

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.2

Confidence

Low

EPSS

0.005

Percentile

76.8%