Published: 22/10/2020 Updated: 30/10/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9

VMScore: 445

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

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an malicious user to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.

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mozilla firefox

Mozilla Foundation Security Advisory 2020-45 Security Vulnerabilities fixed in Firefox 82 Announced October 20, 2020 Impact high Products Firefox Fixed in Firefox 82 ...

An information disclosure issue has been found in Firefox before 820 where if a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler This allowed an attacker to successfully probe whether an external protocol handler was r ...

NVD-CWE-noinfo https://bugzilla.mozilla.org/show_bug.cgi?id=1658881 https://www.mozilla.org/security/advisories/mfsa2020-45/https://nvd.nist.gov https://www.mozilla.org/en-US/security/advisories/mfsa2020-45/https://security.archlinux.org/CVE-2020-15680

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CVE-2020-15680

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