Description
If a long user name is used in a username/password combination in a site URL (such as " http://UserName:[email protected]"), the resulting modal prompt will hang in a non-responsive state or crash, causing a denial of service. This vulnerability affects Firefox < 55.
Exploits (1)
exploitdb
WORKING POC
VERIFIED
by Amit Sangra · textdosmultiple
https://www.exploit-db.com/exploits/43020
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/100401
Exploit, Issue Tracking, Patch x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1360842
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-18/
Third Party Advisory, VDB Entry exploit
x_refsource_exploit-db
https://www.exploit-db.com/exploits/43020/
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1039124
Scores
CVSS v3
7.5
EPSS
0.0690
EPSS Percentile
91.4%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (1)
mozilla/firefox
< 55.0
Published
Jun 11, 2018
Tracked Since
Feb 18, 2026