Improper input validation in Mozilla Firefox
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
A mechanism to spoof the Firefox for Android addressbar using a "javascript:" URI. On Firefox for Android, the base domain is parsed incorrectly, making the resulting location less visibly a spoofed site and showing an incorrect domain in appended notifications. This vulnerability affects Firefox < 53.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 53
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Mozilla Firefox 53
14 records Highest priority Priority MEDIUM 3 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2017-03456 Memory corruption in Mozilla ThunderbirdPriority MEDIUM 48
- TI-2017-03480 Incorrect permission assignment in Mozilla Firefox ESRPriority MEDIUM 47
- TI-2017-03491 An issue with incorrect ownership model of "privateBrowsing" information exposed through…Priority MEDIUM 44
Timeline
- 2026-10-02 Threatist record created from CVE-2017-5450
- 2026-10-03 Alias added: GHSA-m2q8-9rr2-r2ww
References
More Mozilla Firefox vulnerabilities
- TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
- TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
- TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
- TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2017-5450 · CVE Program
- CVE-2017-5450 · NVD
- FIRST EPSS
- GHSA-m2q8-9rr2-r2ww · GitHub Advisory Database · CC BY 4.0
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