Vulnerability Details : CVE-2017-7520
OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker.
Vulnerability category: Denial of serviceInformation leak
Exploit prediction scoring system (EPSS) score for CVE-2017-7520
Probability of exploitation activity in the next 30 days: 0.50%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-7520
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:H/Au:N/C:P/I:N/A:P |
4.9
|
4.9
|
NIST |
7.4
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H |
2.2
|
5.2
|
NIST |
CWE ids for CVE-2017-7520
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
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The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: secalert@redhat.com (Secondary)
References for CVE-2017-7520
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http://www.securitytracker.com/id/1038768
OpenVPN Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Execute Arbitrary Code - SecurityTracker
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http://www.securityfocus.com/bid/99230
OpenVPN Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
http://www.debian.org/security/2017/dsa-3900
Debian -- Security Information -- DSA-3900-1 openvpn
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https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
VulnerabilitiesFixedInOpenVPN243 – OpenVPN CommunityVendor Advisory
Products affected by CVE-2017-7520
- 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:2.4.2:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*