CVE-2018-12370

moderate-risk
Published 2018-10-18

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.

Do I need to act?

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0.29% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Mozilla Canonical

References (10)

Third Party Advisory http://www.securitytracker.com/id/1041193
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1456652
Third Party Advisory https://security.gentoo.org/glsa/201810-01
Third Party Advisory https://usn.ubuntu.com/3705-1/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-15/
Third Party Advisory http://www.securitytracker.com/id/1041193
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1456652
Third Party Advisory https://security.gentoo.org/glsa/201810-01
Third Party Advisory https://usn.ubuntu.com/3705-1/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-15/
43
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 1/34 · Minimal
Exposure 12/34 · Low