CVE-2018-9336

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory slackware.com Vendor Advisory openvpn.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6 third party advisory release notes
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761 vendor advisory mailing list third party advisory
https://www.tenable.com/security/research/tra-2018-09 third party advisory exploit
https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b third party advisory patch
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24 release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-9336?
CVE-2018-9336 has been scored as a high severity vulnerability.
How to fix CVE-2018-9336?
To fix CVE-2018-9336, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-9336 being actively exploited in the wild?
It is possible that CVE-2018-9336 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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