Information disclosure through Resource Timing API during page navigation — Mozilla

2016-08-0200:00:00

Mozilla Foundation

www.mozilla.org

CVSS2

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

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS

0.006

Percentile

79.3%

JSON

Amazon software engineer Catalin Dumitru reported that the URLs of resources loaded after a navigation started (such as in an unload event handler) were leaked to the following page through the Resource Timing API. This leads to potential information disclosure.