CVE-2020-15652

MEDIUM

Mozilla Firefox < 79.0 - Origin Validation Error

Title source: rule

Description

By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.

References (10)

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.html

[Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html

[Broken Link] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.html

[Issue Tracking, Vendor Advisory] https://bugzilla.mozilla.org/show_bug.cgi?id=1634872

[Third Party Advisory] https://usn.ubuntu.com/4443-1/

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2020-30/

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2020-31/

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2020-32/

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2020-33/

[Vendor Advisory] https://www.mozilla.org/security/advisories/mfsa2020-35/

Scores

CVSS v3 6.5

EPSS 0.0106

EPSS Percentile 77.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Classification

CWE

CWE-346

Status published

Affected Products (6)

mozilla/firefox < 79.0

mozilla/firefox_esr < 68.11

mozilla/thunderbird < 68.11

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

Timeline

Published Aug 10, 2020

Tracked Since Feb 18, 2026