CVE-2020-27486
Garmin Forerunner 235 before 8.20 is affected by: Buffer Overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Garmin Forerunner 235 before 8.20 is affected by: Buffer Overflow. 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 string length provided in the data section of the PRG file. It allocates memory for the string immediately, and then copies the string into the TVM object by using a function similar to strcpy. This copy can exceed the length of the allocated string data and overwrite heap data. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.94% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- garmin/forerunner 235 firmware
- Source
- cve@mitre.org
References
- https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0006.mdExploit, Third Party Advisory
- https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0006.mdExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.