CVE-2018-14647 - CVE House
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Status published Medium CVE-2018-14647

Python's elementtree C accelerator failed to initialise Expat's hash salt...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

The Python Project

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Affected Software

Python
Vulnerable Versions:
3.8, 3.7, 3.6, 3.5, 3.4, 2.7

Timeline

Official Publish: September 25th, 2018
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-665 CWE-335

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.