SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-5466

This allows for a cross-site scripting (XSS) attack.

MEDIUM 6.1EPSS 1.55%

Does this matter?

Lower severity and a low EPSS score (1.55%). Track it; it rarely justifies an emergency change on its own.

Description

If a page is loaded from an original site through a hyperlink and contains a redirect to a "data:text/html" URL, triggering a reload will run the reloaded "data:text/html" page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

CVSS 3.0
6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
1.55% probability · 74th percentile
CISA KEV
Not listed
Weakness
CWE-79
Affected
redhat/enterprise linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux workstation · mozilla/thunderbird · mozilla/firefox
Source
security@mozilla.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.