CVE-2018-12370

Name: CVE-2018-12370
Creator: NVD / NIST
Published: 2018-10-18T13:29:03.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.07%

Last modified Jun 17, 2026

CVE-2018-12370 is a vulnerability of currently unknown severity. In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. This vulnerability affects Firefox < 61.

Metrics

EPSS Probability

1.07%

60.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04
Mozilla	Firefox	< 61.0

References

http://www.securitytracker.com/id/1041193Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1456652Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3705-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-15/Vendor Advisory
http://www.securitytracker.com/id/1041193Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1456652Issue Tracking, Patch, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3705-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-15/Vendor Advisory

Timeline

Published: Oct 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12370?

How severe is CVE-2018-12370?

Severity scoring for CVE-2018-12370 is pending analysis. The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12370?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12370?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST