CVE-2017-9023
HIGHCVSS 7.5/10EPSS 2.31%
Last modified
CVE-2017-9023 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 2.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Strongswan | Strongswan | <= 5.5.2 |
References
- http://www.debian.org/security/2017/dsa-3866Third Party Advisory
- http://www.securityfocus.com/bid/98756Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3301-1Third Party Advisory
- http://www.debian.org/security/2017/dsa-3866Third Party Advisory
- http://www.securityfocus.com/bid/98756Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3301-1Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-9023?
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.
How severe is CVE-2017-9023?
CVE-2017-9023 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.31% probability of exploitation in the next 30 days.
How do I fix CVE-2017-9023?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2017-9023?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST