CVE-2017-9023
7.5
HIGH
CVSS 3.1
EPSS 2.1%
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.
How to fix CVE-2017-9023
To remediate CVE-2017-9023, upgrade the affected package to a fixed version below.
- Alpine/strongswan—upgrade to 5.5.3-r0 or later
- Debian/strongswan—upgrade to 5.5.1-4 or later
Is CVE-2017-9023 being exploited?
Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.5.3-r0
- from 0, < 5.5.1-4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |