CVE-2021-22673 Memory corruption in SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100

High 8.0 Published 7 May 2021 Updated 3 Aug 2024

Attackers can remotely execute code via stack-based buffer overflow during OTA firmware updates in SimpleLink Wi-Fi SDKs.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-22673?

CVE-2021-22673 is a high-severity memory corruption vulnerability in SimpleLink Wi-Fi, MSP432, CC13XX, CC26XX, CC32XX, CC3100, published on 7 May 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

The affected product is vulnerable to stack-based buffer overflow while processing over-the-air firmware updates from the CDN server, which may allow an attacker to remotely execute code on the SimpleLink Wi-Fi (MSP432E4 SDK: v4.20.00.12 and prior, CC32XX SDK v4.30.00.06 and prior, CC13X0 SDK versions prior to v4.10.03, CC13X2 and CC26XX SDK versions prior to v4.40.00, CC3200 SDK v1.5.0 and prior, CC3100 SDK v1.3.0 and prior).

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2021-22673?

It affects 7 products.

Products include Ti Cc3100 Software Development Kit, Ti Cc3200 Software Development Kit, Ti Simplelink Cc13x0 Software Development Kit, Ti Simplelink Cc13x2 Software Development Kit, Ti Simplelink Cc26xx Software Development Kit, Ti Simplelink Cc32xx Software Development Kit and 1 more.

How do I fix CVE-2021-22673?

No fix has been published for CVE-2021-22673 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-2021-22673 being exploited?

There is no known exploitation of CVE-2021-22673 in the wild and no public exploit code.

Sources

Also known as GHSA-pgcp-f457-f4rx.