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CVE-2015-4478

UnknownEPSS 3.37%

Last modified

CVE-2015-4478 is a vulnerability of currently unknown severity. Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method.. EPSS estimates a 3.37% chance of exploitation in the next 30 days.

Description

Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method.

Metrics

EPSS Probability
3.37%

87.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux15.04
OpensuseOpensuse13.1
OpensuseOpensuse13.2
MozillaFirefox<= 39.0.3
MozillaFirefox38.0
MozillaFirefox38.0.1
MozillaFirefox38.0.5
MozillaFirefox38.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-4478?
Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method.
How severe is CVE-2015-4478?
Severity scoring for CVE-2015-4478 is pending analysis. The EPSS model estimates a 3.37% probability of exploitation in the next 30 days.
How do I fix CVE-2015-4478?
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-2015-4478?

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

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Source: NVD / NIST