CVE-2017-9023
strongswan: Incorrect Handling of CHOICE types in ASN.1 parser and x509 plugin
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 30, 2017
Updated · December 4, 2025
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.
Statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')