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.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
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DLA-1834-1 | python2.7 security update |
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DLA-1835-1 | python3.4 security update |
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DSA-4306-1 | python2.7 security update |
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DSA-4307-1 | python3.5 security update |
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EUVD-2018-6545 | 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. |
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USN-3817-1 | Python vulnerabilities |
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USN-3817-2 | Python vulnerabilities |
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USN-6891-1 | Python vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 16 Jul 2025 13:45:00 +0000
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Fri, 11 Jul 2025 13:45:00 +0000
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-05T09:38:13.104Z
Reserved: 2018-07-27T00:00:00
Link: CVE-2018-14647

No data.

Status : Modified
Published: 2018-09-25T00:29:00.703
Modified: 2024-11-21T03:49:30.067
Link: CVE-2018-14647


No data.