THREATPORT/VULNERABILITY/CVE-2018-14647
HIGH SEVERITY

CVE-2018-14647

Python vulnerability

CVSS
7.5
EPSS
11.3%
EPSS pct
96th
Exploited
No known
Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
Affected vendor
Python
Affected product
Python
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
Published
2018-09-25

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 availability.

Its EPSS score of 11.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2018-14647

  • Confirm whether Python Python is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-14647.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-14647

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