What’s Vulnerable › Vulnerabilities

CVE-2017-9023

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-06-08 · updated 2026-06-17
• Weakness: CWE-835

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.

Affected products

• strongSwan: through 5.5.2

References

• http://www.debian.org/security/2017/dsa-3866
• http://www.securityfocus.com/bid/98756
• http://www.ubuntu.com/usn/USN-3301-1
• https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html
• http://www.debian.org/security/2017/dsa-3866
• http://www.securityfocus.com/bid/98756
• http://www.ubuntu.com/usn/USN-3301-1
• https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html

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