CVE-2018-5157

Description

Same-origin protections for the PDF viewer can be bypassed, allowing a malicious site to intercept messages meant for the viewer. This could allow the site to retrieve PDF files restricted to viewing by an authenticated user on a third-party website. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.61%
Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:1415 third party advisory vendor advisory
https://security.gentoo.org/glsa/201810-01 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2018:1414 third party advisory vendor advisory
https://www.mozilla.org/security/advisories/mfsa2018-11/ vendor advisory
http://www.securitytracker.com/id/1040896 vdb entry third party advisory
https://www.debian.org/security/2018/dsa-4199 third party advisory vendor advisory
https://usn.ubuntu.com/3645-1/ third party advisory vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1449898 issue tracking permissions required
https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html third party advisory mailing list
https://www.mozilla.org/security/advisories/mfsa2018-12/ vendor advisory
http://www.securityfocus.com/bid/104136 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-5157?
CVE-2018-5157 has been scored as a high severity vulnerability.
How to fix CVE-2018-5157?
To fix CVE-2018-5157, 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-2018-5157 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-5157 is being actively exploited. 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-2018-5157?
CVE-2018-5157 affects Mozilla Firefox ESR, Mozilla Firefox.
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