CVE-2018-18499

Description

A same-origin policy violation allowing the theft of cross-origin URL entries when using a meta http-equiv="refresh" on a page to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

CVSS Metrics

• v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
• v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.12%• Percentile: 30%

Techniques & Countermeasures

• CWE-346•Origin Validation Error

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

Affected Systems

• Unknown•Firefox

  < 62.0 | ≥ unspecified, < 62

• mozilla•firefox_esr

  < 60.2 | ≥ unspecified, < 60.2

• mozilla•thunderbird

  < 60.2.1 | ≥ unspecified, < 60.2.1

References (4)

• https://www.mozilla.org/security/advisories/mfsa2018-20/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1468523
• https://www.mozilla.org/security/advisories/mfsa2018-21/
• https://www.mozilla.org/security/advisories/mfsa2018-25/