CVE-2017-5415

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 12.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-20

Description

An attack can use a blob URL and script to spoof an arbitrary addressbar URL prefaced by "blob:" as the protocol, leading to user confusion and further spoofing attacks. This vulnerability affects Firefox < 52.

Affected products

Mozilla Firefox: before 52.0 — fixed in 52.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 52.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/96692
http://www.securitytracker.com/id/1037966
https://bugzilla.mozilla.org/show_bug.cgi?id=1321719
https://www.mozilla.org/security/advisories/mfsa2017-05/
http://www.securityfocus.com/bid/96692
http://www.securitytracker.com/id/1037966
https://bugzilla.mozilla.org/show_bug.cgi?id=1321719
https://www.mozilla.org/security/advisories/mfsa2017-05/

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