CVE-2020-7523 Privilege escalation in Schneider Electric Modbus Serial Driver (64 bits) versions prior to V3.20 IE 30, Schneider Electric Modbus Serial Driver (32 bits) versions prior to V2.20 IE 30, and Schneider Electric Modbus Driver Suite versions prior to V14.15.0.0
Local attackers can escalate privileges by invoking the Schneider Electric Modbus Serial Driver service due to improper privilege management.
- 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-2020-7523?
CVE-2020-7523 is a high-severity vulnerability in Schneider Electric Modbus Serial Driver (64 bits) versions prior to V3.20 IE 30, Schneider Electric Modbus Serial Driver (32 bits) versions prior to V2.20 IE 30, and Schneider Electric Modbus Driver Suite versions prior to V14.15.0.0, published on 31 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Privilege Management vulnerability exists in Schneider Electric Modbus Serial Driver (see security notification for versions) which could cause local privilege escalation when the Modbus Serial Driver service is invoked. The driver does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Weakness: CWE-269
Which versions are affected by CVE-2020-7523?
It affects 2 products.
Products include Schneider-Electric Modbus Driver Suite, Schneider-Electric Modbus Serial Driver.
How do I fix CVE-2020-7523?
No fix has been published for CVE-2020-7523 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-7523 being exploited?
There is no known exploitation of CVE-2020-7523 in the wild and no public exploit code.
Sources
Also known as GHSA-pxg4-q469-ggv7.