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Ubuntu: (Multiple Advisories) (CVE-2018-5143): Firefox regression

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Ubuntu: (Multiple Advisories) (CVE-2018-5143): Firefox regression

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
03/14/2018
Created
07/25/2018
Added
04/26/2018
Modified
01/20/2021

Description

URLs using "javascript:" have the protocol removed when pasted into the addressbar to protect users from cross-site scripting (XSS) attacks, but if a tab character is embedded in the "javascript:" URL the protocol is not removed and the script will execute. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Firefox < 59.

Solution(s)

  • ubuntu-upgrade-firefox

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