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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2018-20/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1468523 issue tracking permissions required vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-21/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-25/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18499?
CVE-2018-18499 has been scored as a medium severity vulnerability.
How to fix CVE-2018-18499?
To fix CVE-2018-18499, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18499 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-18499 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-18499?
CVE-2018-18499 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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