#VU52770 Integer overflow in Nuttx OS - CVE-2021-26461

Vulnerability identifier: #VU52770

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-26461

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nuttx OS
Operating systems & Components / Operating system

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in malloc, realloc and memalign functions. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nuttx OS: 7.13 - 9.1.0

---

External links
https://ics-cert.us-cert.gov/advisories/icsa-21-119-04

---

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.