CVE-2021-22671: Integer Overflow

Reference Links

• https://us-cert.cisa.gov/ics/advisories/icsa-21-119-01
• https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-01 (Advisory)

Parent vulnerabilities

(Appears in the following advisories)

• ICSA-21-119-01

Frequently Asked Questions

• What is CVE-2021-22671?

  CVE-2021-22671 is a vulnerability that involves multiple integer overflow issues while processing long domain names, which may allow an attacker to remotely execute code on the affected systems.

• What is the severity of CVE-2021-22671?

  CVE-2021-22671 has a severity rating of 9.8 (critical).

• Which software development kits are affected by CVE-2021-22671?

  CVE-2021-22671 affects the following software development kits: Ti Cc3100 Software Development Kit (up to version 1.3.0), Ti Cc3200 Software Development Kit (up to version 1.5.0), Ti Simplelink Cc13x0 Software Development Kit (prior to version 4.10.03), Ti Simplelink Cc13x2 Software Development Kit (prior to version 4.40.00), Ti Simplelink Cc26xx Software Development Kit (prior to version 4.40.00), and Ti Simplelink Cc32xx Software Development Kit (up to version 4.30.00.06), and Ti Simplelink Msp432e4 Software Development Kit (up to version 4.20.00.12).

• How can an attacker exploit CVE-2021-22671?

  An attacker can exploit CVE-2021-22671 by sending specially crafted long domain names to the affected system, which may trigger the integer overflow issues and allow the execution of remote code.

• Is there a fix for CVE-2021-22671?

  To fix CVE-2021-22671, it is recommended to update to the latest version of the affected software development kits as soon as they become available. Additionally, implementing proper input validation and length checks can help mitigate the risk.