CVE-2020-10138 Privilege escalation in Cyber Backup
Local attackers can achieve SYSTEM privileges by creating a malicious OpenSSL configuration file in a predictable path used by the Acronis privileged service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-10138?
CVE-2020-10138 is a high-severity vulnerability in Acronis Cyber Protect, published on 21 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Acronis Cyber Backup 12.5 and Cyber Protect 15 include an OpenSSL component that specifies an OPENSSLDIR variable as a subdirectory within C:\jenkins_agent\. Acronis Cyber Backup and Cyber Protect contain a privileged service that uses this OpenSSL component. Because unprivileged Windows users can create subdirectories off of the system root, a user can create the appropriate path to a specially-crafted openssl.cnf file to achieve arbitrary code execution with SYSTEM privileges.
Which versions are affected by CVE-2020-10138?
It affects 2 products.
Products include Acronis Cyber Backup, Acronis Cyber Protect.
How do I fix CVE-2020-10138?
No fix has been published for CVE-2020-10138 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-10138 being exploited?
There is no known exploitation of CVE-2020-10138 in the wild and no public exploit code.
Other vulnerabilities in Acronis Cyber Protect
Sources
Also known as GHSA-8h9x-6778-m2fg.