CVE-2017-9233

expat: Inifinite loop due to invalid XML in external entity

Published Jul 25, 2017 CVSS 3.1 · 7.5 High EPSS 8.7% KEV · Not listed
Description
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-990-1 expat security update
Debian DSA Debian DSA DSA-3898-1 expat security update
EUVD EUVD EUVD-2017-18171 XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Ubuntu USN Ubuntu USN USN-3356-1 Expat vulnerability
Ubuntu USN Ubuntu USN USN-3356-2 Expat vulnerability
Ubuntu USN Ubuntu USN USN-4825-1 Coin3D vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 8, 2026, 9:03 PM
Reserved
May 26, 2017, 12:00 AM
Status
Modified
Published
Jul 25, 2017, 8:29 PM
Modified
Oct 8, 2026, 9:17 PM
Severity
Moderate
Public date
Jun 14, 2017, 12:00 AM