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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 11.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 11.25% probability · 96th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-428
- Affected
- veyon/veyon
- Source
- security-advisories@github.com
References
- http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1Patch, Third Party Advisory
- https://github.com/veyon/veyon/issues/657Issue Tracking, Third Party Advisory
- https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqpThird Party Advisory
- https://www.exploit-db.com/exploits/48246Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/49925Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlExploit, Third Party Advisory, VDB Entry
- https://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1Patch, Third Party Advisory
- https://github.com/veyon/veyon/issues/657Issue Tracking, Third Party Advisory
- https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqpThird Party Advisory
- https://www.exploit-db.com/exploits/48246Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/49925Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.