Improper input validation in Mozilla Firefox
CVE-2017-5383
URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.025 (83.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.3, 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.3, 7.4, 7.5
- Red Hat Enterprise Linux Workstation — versions 5.0, 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2017-03/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-02/ (Vendor Advisory)
- security.gentoo.org/glsa/201702-22 (vendor-advisory, Third Party Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.debian.org/security/2017/dsa-3832 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201702-13 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2017/dsa-3771 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1037693 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-01/ (Vendor Advisory)
- rhn.redhat.com/errata/RHSA-2017-0190.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-5383?
- CVE-2017-5383 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2018-06-11.
- How severe is CVE-2017-5383?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2017-5383 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.