CVE-2018-5094

high-risk
Published 2018-06-11

A heap buffer overflow vulnerability may occur in WebAssembly when "shrinkElements" is called followed by garbage collection on memory that is now uninitialized. This results in a potentially exploitable crash. This vulnerability affects Firefox < 58.

Do I need to act?

!
35.4% chance of exploitation in next 30 days
EPSS score — higher than 65% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Mozilla Canonical

References (10)

Third Party Advisory http://www.securityfocus.com/bid/102786
Third Party Advisory http://www.securitytracker.com/id/1040270
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1415883
Third Party Advisory https://usn.ubuntu.com/3544-1/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-02/
Third Party Advisory http://www.securityfocus.com/bid/102786
Third Party Advisory http://www.securitytracker.com/id/1040270
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1415883
Third Party Advisory https://usn.ubuntu.com/3544-1/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2018-02/
52
/ 100
high-risk
Severity 26/34 · High
Exploitability 16/34 · Moderate
Exposure 10/34 · Low