CVE-2017-7839
MEDIUMFirefox < 57 - Cross-Site Scripting via JavaScript URL Address Bar Bypass
Title source: llmDescription
Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be ignored and the pasted JavaScript to be executed instead of being blocked. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks where users are convinced to copy and paste text into the addressbar. This vulnerability affects Firefox < 57.
References (4)
Core 4
Core References
Issue Tracking, Permissions Required x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1402896
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-24/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/101832
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1039803
Scores
CVSS v3
6.1
EPSS
0.0063
EPSS Percentile
70.6%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Details
CWE
CWE-79
Status
published
Products (1)
mozilla/firefox
< 56.0.2
Published
Jun 11, 2018
Tracked Since
Feb 18, 2026