7.5high
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…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
7.5
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
2.2%
percentile 83%
Public exploits
0
none known
Summary
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.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 11 mo ago
Exploit prediction (EPSS)
2.22% probability of exploitation in the next 30 days, higher than 83% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-835 Loop with Unreachable Exit Condition
References
- securityfocus.com /bid/98756 · vdb-entry, x_refsource_BID, x_transferred
- strongswan.org /blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html · x_refsource_CONFIRM, x_transferred
- debian.org /security/2017/dsa-3866 · vendor-advisory, x_refsource_DEBIAN, x_transferred
- ubuntu.com /usn/USN-3301-1 · vendor-advisory, x_refsource_UBUNTU, x_transferred
Sources
- CVE List: CVE-2017-9023
- NVD: CVE-2017-9023
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