CVE-2018-9336: Double Free
First published: Tue May 01 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openvpn Openvpn | >=2.4.0<2.4.6 | |
| Slackware Slackware Linux | =13.0 | |
| Slackware Slackware Linux | =13.1 | |
| Slackware Slackware Linux | =13.37 | |
| Slackware Slackware Linux | =14.0 | |
| Slackware Slackware Linux | =14.1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761
- https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24
- https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b
- https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6
- https://www.tenable.com/security/research/tra-2018-09
Frequently Asked Questions
What is CVE-2018-9336?
CVE-2018-9336 is a vulnerability in OpenVPN 2.4.x before 2.4.6 that allows a local attacker to cause a double-free of memory, potentially leading to denial-of-service or other impacts.
How severe is CVE-2018-9336?
CVE-2018-9336 has a severity rating of 7.8 (High).
Which software versions are affected by CVE-2018-9336?
OpenVPN 2.4.x before 2.4.6 and Slackware Linux versions 13.0, 13.1, 13.37, 14.0, and 14.1 are affected by CVE-2018-9336.
How can CVE-2018-9336 be fixed?
To fix CVE-2018-9336, users should upgrade to OpenVPN version 2.4.6 or later.
Where can I find more information about CVE-2018-9336?
More information about CVE-2018-9336 can be found at the following references: Slackware Security Advisory, OpenVPN Wiki, and OpenVPN GitHub commit.
- collector/nvd-index
- agent/references
- agent/author
- agent/severity
- agent/weakness
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/openvpn
- canonical/openvpn openvpn
- version/openvpn openvpn/2.4.0
- vendor/slackware
- canonical/slackware slackware linux
- version/slackware slackware linux/13.0
- version/slackware slackware linux/13.1
- version/slackware slackware linux/13.37
- version/slackware slackware linux/14.0
- version/slackware slackware linux/14.1