High severity · published May 1, 2018
CVE-2018-9336
openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the…
7.8
CVSS
0.6%
EPSS
No
On KEV
Description
openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openvpn · Openvpn
2.4.0 before 2.4.6 · source: NVD
SL
Slackware Linux · Slackware
13.0; 13.1; 13.37; 14.0; 14.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-9336
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-9336
Mailing List
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761
Release Notes
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24
Patch
https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b
Release Notes
https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6
Exploit
https://www.tenable.com/security/research/tra-2018-09
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