THREATPORT/VULNERABILITY/CVE-2018-7166
HIGH SEVERITY

CVE-2018-7166

Node.Js vulnerability

CVSS
7.5
EPSS
3.2%
EPSS pct
87th
Exploited
No known
In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.
Affected vendor
Nodejs
Affected product
Node.Js
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2018-08-21

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2018-7166

  • Confirm whether Nodejs Node.Js is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-7166.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-7166

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-7166 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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