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 6.7 MEDIUM
CVSS v2.0 7.2 HIGH

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://packetstormsecurity.com/files/162873/Veyon-4.4.1-Unquoted-Service-Path.html	Exploit Third Party Advisory VDB Entry
https://github.com/veyon/veyon/commit/f231ec511b9a09f43f49b2c7bb7c60b8046276b1	Patch Third Party Advisory
https://github.com/veyon/veyon/issues/657	Issue Tracking Third Party Advisory
https://github.com/veyon/veyon/security/advisories/GHSA-c8cc-x786-hqqp	Third Party Advisory
https://www.exploit-db.com/exploits/48246	Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/49925	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

cpe:2.3:a:veyon:veyon:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-10-19 22:15

Updated : 2022-10-18 20:13

NVD link : CVE-2020-15261

Mitre link : CVE-2020-15261

CVE.ORG link : CVE-2020-15261

JSON object : View

Products Affected

veyon

veyon

microsoft

windows

CWE

CWE-428

Unquoted Search Path or Element

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