Vulnerability Details : CVE-2017-7479
OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.
Vulnerability category: Denial of service
Products affected by CVE-2017-7479
- cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:openvpn:openvpn:2.4.0:rc1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7479
0.38%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 69 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7479
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2017-7479
-
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2017-7479
-
http://www.securityfocus.com/bid/98443
OpenVPN CVE-2017-7479 Denial of Service Vulnerability
-
https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits
QuarkslabAndCryptographyEngineerAudits – OpenVPN CommunityVendor Advisory
-
http://www.debian.org/security/2017/dsa-3900
Debian -- Security Information -- DSA-3900-1 openvpn
-
http://www.securitytracker.com/id/1038473
OpenVPN Packet Processing Flaws Let Remote Users Cause the Target Service to Crash - SecurityTracker
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