CVE-2018-18494

Description

A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property 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 Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.34% Top 25%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2018-29/ vendor advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html third party advisory mailing list
https://access.redhat.com/errata/RHSA-2018:3833 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:3831 third party advisory vendor advisory
https://www.debian.org/security/2019/dsa-4362 third party advisory vendor advisory
https://security.gentoo.org/glsa/201903-04 third party advisory vendor advisory
https://usn.ubuntu.com/3844-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/106168 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2019:0159 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-31/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-30/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1487964 issue tracking permissions required vendor advisory
https://www.debian.org/security/2018/dsa-4354 third party advisory vendor advisory
https://usn.ubuntu.com/3868-1/ third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:0160 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-18494?
CVE-2018-18494 has been scored as a medium severity vulnerability.
How to fix CVE-2018-18494?
To fix CVE-2018-18494, 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-2018-18494 being actively exploited in the wild?
It is possible that CVE-2018-18494 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-18494?
CVE-2018-18494 affects Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox.
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