Use of Externally-Controlled Format String Affecting openvpn package, versions *
Threat Intelligence
Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-DEBIAN12-OPENVPN-1556018
- published16 Mar 2018
- disclosed16 Mar 2018
Introduced: 16 Mar 2018
CVE-2018-7544 (opens in a new tab)How to fix?
There is no fixed version for Debian:12 openvpn.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openvpn package and not the openvpn package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without a password, and when no other clients are connected to this interface, attackers can execute arbitrary management commands, obtain sensitive information, or cause a denial of service (SIGTERM) by triggering XMLHttpRequest actions in a web browser. This is demonstrated by a multipart/form-data POST to http://localhost:23000 with a "signal SIGTERM" command in a TEXTAREA element. NOTE: The vendor disputes that this is a vulnerability. They state that this is the result of improper configuration of the OpenVPN instance rather than an intrinsic vulnerability, and now more explicitly warn against such configurations in both the management-interface documentation, and with a runtime warning