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CVE-2015-0817

UnknownEPSS 3.68%

Last modified

CVE-2015-0817 is a vulnerability of currently unknown severity. The asm.js implementation in Mozilla Firefox before 36.0.3, Firefox ESR 31.x before 31.5.2, and SeaMonkey before 2.33.1 does not properly determine the cases in which bounds checking may be safely skipped during JIT compilation and heap access, which allows remote attackers to read or write to unintended memory locations, and consequently execute arbitrary code, via crafted JavaScript.. EPSS estimates a 3.68% chance of exploitation in the next 30 days.

Description

The asm.js implementation in Mozilla Firefox before 36.0.3, Firefox ESR 31.x before 31.5.2, and SeaMonkey before 2.33.1 does not properly determine the cases in which bounds checking may be safely skipped during JIT compilation and heap access, which allows remote attackers to read or write to unintended memory locations, and consequently execute arbitrary code, via crafted JavaScript.

Metrics

EPSS Probability
3.68%

88.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MozillaFirefox<= 36.0.1
MozillaFirefox31.0
MozillaFirefox31.1.0
MozillaFirefox31.1.1
MozillaFirefox31.3.0
MozillaFirefox31.5.1
MozillaFirefox Esr31.1
MozillaFirefox Esr31.2
MozillaFirefox Esr31.3
MozillaFirefox Esr31.4
MozillaFirefox Esr31.5
MozillaSeamonkey<= 2.33.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-0817?
The asm.js implementation in Mozilla Firefox before 36.0.3, Firefox ESR 31.x before 31.5.2, and SeaMonkey before 2.33.1 does not properly determine the cases in which bounds checking may be safely skipped during JIT compilation and heap access, which allows remote attackers to read or write to unintended memory locations, and consequently execute arbitrary code, via crafted JavaScript.
How severe is CVE-2015-0817?
Severity scoring for CVE-2015-0817 is pending analysis. The EPSS model estimates a 3.68% probability of exploitation in the next 30 days.
How do I fix CVE-2015-0817?
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-2015-0817?

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

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Source: NVD / NIST