CVE-2020-27483 Information disclosure in n/a
A malicious ConnectIQ app can leak runtime memory or achieve remote code execution on Garmin Forerunner 235 watches via unchecked stack offsets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-27483?
CVE-2020-27483 is a critical vulnerability in n/a, published on 16 Nov 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter trusts the offset provided for the stack value duplication instruction, DUP. The offset is unchecked and memory prior to the start of the execution stack can be read and treated as a TVM object. A successful exploit could use the vulnerability to leak runtime information such as the heap handle or pointer for a number of TVM context variables. Some reachable values may be controlled enough to forge a TVM object on the stack, leading to possible remote code execution.
Weakness: CWE-129
Which versions are affected by CVE-2020-27483?
It affects 1 product.
Products include Garmin Forerunner 235 Firmware.
How do I fix CVE-2020-27483?
No fix has been published for CVE-2020-27483 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-27483 being exploited?
There is no known exploitation of CVE-2020-27483 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cr23-gw9g-5cwj.