CVE-2020-10062 Packet length decoding error in MQTT
An off-by-one error in the Zephyr RTOS MQTT packet length decoder allows remote attackers to cause memory corruption and potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-10062?
CVE-2020-10062 is a critical memory corruption vulnerability in Zephyrproject Zephyr, published on 5 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.
Weakness: CWE-193
Which versions are affected by CVE-2020-10062?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2020-10062?
No fix has been published for CVE-2020-10062 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-10062 being exploited?
There is no known exploitation of CVE-2020-10062 in the wild and no public exploit code.
Other vulnerabilities in Zephyrproject Zephyr
- CVE-2026-5067 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
- CVE-2022-3806 Bluetooth HCI Error Handling Double Free
- CVE-2017-14199 Memory corruption in getaddrinfo
- CVE-2018-1000800 Null dereference in n/a
- CVE-2021-3329 DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Sources
Also known as GHSA-5rf5-gcg9-hrpr.