CVE-2017-9023

strongswan: Incorrect Handling of CHOICE types in ASN.1 parser and x509 plugin

Published Jun 8, 2017 CVSS 3.1 · 7.5 High EPSS 2.2% KEV · Not listed
Description
The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-973-1 strongswan security update
Debian DSA Debian DSA DSA-3866-1 strongswan security update
EUVD EUVD EUVD-2017-17963 The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.
Ubuntu USN Ubuntu USN USN-3301-1 strongSwan vulnerabilities
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Dec 3, 2025, 9:13 PM
Reserved
May 16, 2017, 12:00 AM
Status
Modified
Published
Jun 8, 2017, 4:29 PM
Modified
Jun 17, 2026, 1:27 AM
Severity
Moderate
Public date
May 30, 2017, 12:00 AM