CVE-2019-11762

Description

If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVSS Metrics

• v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
• v2.0•MEDIUM•Score: 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 0.35%• Percentile: 58%

Techniques & Countermeasures

• CWE-346•Origin Validation Error

  The product does not properly verify that the source of data or communication is valid.

Affected Systems

• canonical•ubuntu_linux

  16.04

• mozilla•firefox

  < 70.0 | < 70

• mozilla•firefox_esr

  < 68.2

• mozilla•thunderbird

  < 68.2

References (6)

• https://www.mozilla.org/security/advisories/mfsa2019-35/
• https://www.mozilla.org/security/advisories/mfsa2019-33/
• https://www.mozilla.org/security/advisories/mfsa2019-34/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1582857
• https://security.gentoo.org/glsa/202003-10
• https://usn.ubuntu.com/4335-1/