CVE-2020-10143 Privilege escalation in Reflect
Local attackers can achieve SYSTEM privileges by placing a malicious OpenSSL config file in a predictable path used by the 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-2020-10143?
CVE-2020-10143 is a high-severity vulnerability in Macrium Reflect, published on 9 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Macrium Reflect includes an OpenSSL component that specifies an OPENSSLDIR variable as C:\openssl\. Macrium Reflect contains 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-2020-10143?
It affects 1 product.
Products include Macrium Reflect.
How do I fix CVE-2020-10143?
No fix has been published for CVE-2020-10143 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-10143 being exploited?
There is no known exploitation of CVE-2020-10143 in the wild and no public exploit code.
Other vulnerabilities in Macrium Reflect
Sources
Also known as GHSA-7r93-vjf4-cwc6.