Loop with Unreachable Exit Condition ('Infinite Loop') Affecting strongswan package, versions <5.3.5-1ubuntu4.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1610-STRONGSWAN-385172
- published8 Jun 2017
- disclosed8 Jun 2017
Introduced: 8 Jun 2017
CVE-2017-9023 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.10 strongswan to version 5.3.5-1ubuntu4.3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream strongswan package and not the strongswan package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.10 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-9023
- https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html
- https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-(cve-2017-9023).html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9023
- http://www.debian.org/security/2017/dsa-3866
- https://security-tracker.debian.org/tracker/CVE-2017-9023
- http://www.securityfocus.com/bid/98756
- http://www.ubuntu.com/usn/USN-3301-1