Vulnerability identifier: #VU15446

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-16598

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FreeRTOS
Operating systems & Components / Operating system
OpenRTOS
Operating systems & Components / Operating system
SafeRTOS
Operating systems & Components / Operating system

Vendor: Amazon Web Services
WITTENSTEIN high integrity systems

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to code takes no steps to prevent DNS Poisoning, As any DNS answer the device receives will be parsed fully, without checking if it matches an outgoing DNS query. A remote attacker can trigger memory leak and access arbitrary data.

Mitigation
Update the affected software to version 1.3.2.

Vulnerable software versions

FreeRTOS: 1.00 - 10.0.1

OpenRTOS: All versions

SafeRTOS: All versions

---

External links
http://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromi...

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.