Security readout for executives and security teams
CVE-2017-9023 is a denial-of-service flaw in strongSwan certificate parsing. A remote attacker could send a crafted certificate that makes vulnerable systems loop indefinitely, consuming availability for VPN or IPsec services using the x509 plugin. The issue is high priority for exposed strongSwan deployments, but the provided sources do not show active exploitation. Exposure is most likely on strongSwan deployments before 5.5.3 that enable the x509 plugin and process peer certificates. Internet-facing VPN or IPsec gateways using certificate authentication are the most urgent systems to inventory. The source bundle does not provide complete product CPEs or platform-specific affected version ranges. Treat this as a high-priority availability risk for VPN infrastructure. It does not indicate data compromise, but a remote unauthenticated denial of service against security access infrastructure can disrupt operations. Patch exposed strongSwan systems first, especially gateways supporting remote access, site-to-site VPNs, or certificate-based IPsec. Mitigation focus: Upgrade strongSwan to 5.5.3 or later where directly managed.; Apply Debian DSA-3866 or Ubuntu USN-3301-1 packages where those distributions are used.; Prioritize remediation for internet-facing VPN or IPsec gateways..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2017-9023 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.htmlCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Loop with Unreachable Exit Condition ('Infinite Loop')
Loop with Unreachable Exit Condition ('Infinite Loop') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.