CVE-2017-7783

moderate-risk
Published 2018-06-11

If a long user name is used in a username/password combination in a site URL (such as " http://UserName:Password@example.com"), the resulting modal prompt will hang in a non-responsive state or crash, causing a denial of service. This vulnerability affects Firefox < 55.

Do I need to act?

~
6.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
43020
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Mozilla

References (10)

Third Party Advisory http://www.securityfocus.com/bid/100401
Third Party Advisory http://www.securitytracker.com/id/1039124
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1360842
Third Party Advisory https://www.exploit-db.com/exploits/43020/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-18/
Third Party Advisory http://www.securityfocus.com/bid/100401
Third Party Advisory http://www.securitytracker.com/id/1039124
Exploit https://bugzilla.mozilla.org/show_bug.cgi?id=1360842
Third Party Advisory https://www.exploit-db.com/exploits/43020/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-18/
47
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 16/34 · Moderate
Exposure 5/34 · Minimal