CVE-2020-10027: ARC Platform Uses Signed Integer Comparison When Validating Syscall Numbers
First published: Mon May 11 2020(Updated: )
An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.
Credit: vulnerabilities@zephyrproject.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zephyr Project Manager | =1.14.0 | |
| Zephyr Project Manager | =2.1.0 |
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Reference Links
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10027
- https://github.com/zephyrproject-rtos/zephyr/pull/23328
- https://github.com/zephyrproject-rtos/zephyr/pull/23499
- https://github.com/zephyrproject-rtos/zephyr/pull/23500
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-35
Frequently Asked Questions
What is the severity of CVE-2020-10027?
CVE-2020-10027 is considered a high-severity vulnerability allowing privilege escalation from user thread execution to kernel level.
How do I fix CVE-2020-10027?
To mitigate CVE-2020-10027, upgrade to Zephyr versions later than 1.14.0 and 2.1.0 that include the necessary patches.
Which versions of Zephyr are affected by CVE-2020-10027?
CVE-2020-10027 affects Zephyr versions 1.14.0 and later, as well as 2.1.0 and later versions.
Can CVE-2020-10027 be exploited remotely?
CVE-2020-10027 requires an attacker to have code execution within a user thread, making a remote exploit challenging.
What types of systems are vulnerable to CVE-2020-10027?
Systems running affected versions of the Zephyr Project RTOS are vulnerable to CVE-2020-10027.
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