CVE-2020-15261

On Windows the Veyon Service before version 4.4.2 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 problem has been fixed in version 4.4.2. As a workaround, the exploitation of the vulnerability can be prevented by revoking administrative privileges from all potentially untrustworthy users.

CVSS v3.1

6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

8.0 HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

11.25% chance of exploitation in the next 30 days, 96th percentile

Published

2020-10-19

Updated

2024-08-04

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.html
• https://www.exploit-db.com/exploits/48246

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49925

References

• CVE Record
• NVD entry

Related

• CVE-2020-15257
• CVE-2020-15300
• CVE-2020-15256
• CVE-2020-15302
• CVE-2020-15255
• CVE-2020-15308