In updatehub_probe, right after JSON parsing is complete, objects[1] is accessed from the output structure in two different places. If the JSON contained less than two elements, this access would reference unitialized stack memory. This could result in a crash, denial of service, or possibly an information leak. Provided the fix in CVE-2020-10059 is applied, the attack requires compromise of the server. See NCC-ZEP-030 This issue affects: zephyrproject-rtos zephyr version 2.1.0 and later versions. version 2.2.0 and later versions.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10060
Reference (s):
- https://github.com/zephyrproject-rtos/zephyr/pull/27865
- URL: https://github.com/zephyrproject-rtos/zephyr/pull/27865
- https://github.com/zephyrproject-rtos/zephyr/pull/27889
- URL: https://github.com/zephyrproject-rtos/zephyr/pull/27889
- https://github.com/zephyrproject-rtos/zephyr/pull/27891