Published: 28/02/2019 Updated: 01/03/2019

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

When a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about which domain is registering the new protocol. This may result in the user approving a protocol handler that they otherwise would not have. This vulnerability affects Firefox < 63.

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mozilla firefox
canonical ubuntu linux 14.04
canonical ubuntu linux 18.04
canonical ubuntu linux 16.04
canonical ubuntu linux 18.10

Firefox could be made to crash or run programs as your login if it opened a malicious website ...

USN-3801-1 caused some minor regressions in Firefox ...

Mozilla Foundation Security Advisory 2018-26 Security vulnerabilities fixed in Firefox 63 Announced October 23, 2018 Impact critical Products Firefox Fixed in Firefox 63 ...

A security issue has been found in Firefox versions prior to 630, where when a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about which domain is registering the new protocol This may result in the user approving a protocol handler that they otherwise would not have ...

CWE-287 https://www.mozilla.org/security/advisories/mfsa2018-26/https://bugzilla.mozilla.org/show_bug.cgi?id=1490276 https://usn.ubuntu.com/3801-1/http://www.securitytracker.com/id/1041944 http://www.securityfocus.com/bid/105721 https://nvd.nist.gov https://usn.ubuntu.com/3801-1/

CVE-2018-12399

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