Improper input validation in Mozilla Firefox
CVE-2017-7783
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.141 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.135 · newest: 0.141 · change: +0.006
Affected products
- Mozilla Firefox — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/100401 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Patch, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2017-18/ (Vendor Advisory)
- www.exploit-db.com/exploits/43020/ (VDB Entry, Third Party Advisory, exploit)
- www.securitytracker.com/id/1039124 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-7783?
- CVE-2017-7783 is a high-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2018-06-11.
- How severe is CVE-2017-7783?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-7783 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.