CVE-2021-1943 Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking

High 7.5 Published 13 Jul 2021 Updated 3 Aug 2024

An out-of-bounds read in Qualcomm Snapdragon firmware allows attackers to cause denial of service or disclose sensitive information via crafted beacon responses.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-1943?

CVE-2021-1943 is a high-severity memory corruption vulnerability in Qualcomm Apq8053 Firmware, published on 13 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Possible buffer out of bound read can occur due to improper validation of TBTT count and length while parsing the beacon response in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wired Infrastructure and Networking

Weakness: CWE-125

Which versions are affected by CVE-2021-1943?

It affects 177 products.

Products include Qualcomm Apq8053 Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar9380 Firmware, Qualcomm Csr8811 Firmware, Qualcomm Csrb31024 Firmware, Qualcomm Ipq4018 Firmware and 171 more.

How do I fix CVE-2021-1943?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-1943 being exploited?

There is no known exploitation of CVE-2021-1943 in the wild and no public exploit code.

All Qualcomm Apq8053 Firmware vulnerabilities

Sources

Also known as 2836205, A-184561361, ASB-A-184561361, GHSA-hqvp-wjr7-fp87.