Unquoted service path vulnerability on Veyon
46Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8epss 11%
from disclosure to weapon450 days
Published on NVDOct 19
1st PoC+450d
exploitation probability
11%top 4% of all CVEs
observed exploitation
nono source reports it
4 public exploit(s)
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/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
veyon · veyonpublic PoCs found — 4
cve_referencewww.exploit-db.com/exploits/49925unverifiedgithubgithub.com/yaoyao-cool/CVE-2020-15261★ 0cve_referencepacketstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlunverifiedcve_referencewww.exploit-db.com/exploits/48246unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.htmlhttps://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1https://github.com/veyon/veyon/issues/657https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqphttps://www.exploit-db.com/exploits/48246https://www.exploit-db.com/exploits/49925