CVE-2020-15261

 

Published at: - 20-10-2020 12:15

Last modified: - 18-10-2022 10:13

Total changes: - 4

Description

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1
• https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqp
• https://github.com/veyon/veyon/issues/657
• http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.html
• https://www.exploit-db.com/exploits/49925
• https://www.exploit-db.com/exploits/48246

 

Keywords

NVD

 

CVE-2020-15261

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures