CVE-2017-9023

7.5 HIGH

Published: June 08, 2017 Modified: December 03, 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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.debian.org/security/2017/dsa-3866

Source: cve@mitre.org

Third Party Advisory

http://www.securityfocus.com/bid/98756

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://www.ubuntu.com/usn/USN-3301-1

Source: cve@mitre.org

Third Party Advisory

https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html

Source: cve@mitre.org

http://www.debian.org/security/2017/dsa-3866

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

http://www.securityfocus.com/bid/98756

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

http://www.ubuntu.com/usn/USN-3301-1

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html

Source: af854a3a-2127-422b-91ae-364da2661108

8 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

2.2%

84th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-835 CWE-835

Affected Vendors

strongswan

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