Incorrect default permissions in Kepware LinkMaster
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-13535 |
| CWE-ID | CWE-276 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
LinkMaster Server applications / Other server solutions |
| Vendor | Kepware |
Security Bulletin
This security bulletin contains information about 1 vulnerabilities.
Updated: 21.12.2020
Changed bulletin status to patched, added additional links.
1) Incorrect default permissions
EUVDB-ID: #VU49050
Risk: Low
CVSSv3.1: 8.1 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-13535
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A local attacker can globally overwrite service configuration and execute arbitrary code with elevated privileges.
MitigationInstall update from vendor's website.
Vulnerable software versionsLinkMaster: 3.0.94.0
External linkshttp://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1147
http://ics-cert.us-cert.gov/advisories/icsa-20-352-03
http://my.kepware.com/s/login/?ec=302&startURL=%2Fs%2F
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
