Skip to content

Unquoted service path vulnerability on Microsoft Windows

Moderate
tobydox published GHSA-c8cc-x786-hqqp Oct 16, 2020

Package

veyon (Microsoft Windows)

Affected versions

< 4.4.2

Patched versions

4.4.2

Description

Impact

On Windows the Veyon Service contains an unquoted service path vulnerability, allowing locally authenticated users with administrative privileges to run malicious executables with LocalSystem privileges. Since Veyon users (both students and teachers) usually don't have administrative privileges, this vulnerability is only dangerous in anyway unsafe setups. The Linux version of Veyon is not affected by this vulnerability.

Patches

The problem has been fixed in version 4.4.2. Windows users should upgrade to version 4.4.2 or newer.

Workarounds

The exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.

References

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVE ID

CVE-2020-15261

Weaknesses

No CWEs