CVE-2021-30326 Explained : Impact and Mitigation
Learn about CVE-2021-30326, a vulnerability impacting Qualcomm Snapdragon products due to improper size validation. Explore the impact, affected systems, and mitigation measures.
This article provides insights into CVE-2021-30326, a vulnerability that affects various Qualcomm Snapdragon products.
Understanding CVE-2021-30326
CVE-2021-30326 involves a possible assertion issue resulting from improper size validation during the processing of the DownlinkPreemption IE in an RRC Reconfiguration/RRC Setup message within different Qualcomm Snapdragon product lines.
What is CVE-2021-30326?
The vulnerability in Qualcomm Snapdragon products can lead to a possible assertion due to incorrect size validation while handling specific messages, impacting a range of Snapdragon devices across different industries.
The Impact of CVE-2021-30326
With a CVSS base score of 7.5, this vulnerability has a high availability impact. An attacker can exploit this flaw to trigger a denial of service condition, affecting the normal operation of the devices.
Technical Details of CVE-2021-30326
CVE-2021-30326 is classified as a reachable assertion in the modem. The affected products include Snapdragon Auto, Compute, Connectivity, Industrial IOT, and Mobile devices with a wide array of versions.
Vulnerability Description
The vulnerability arises from improper size validation of the DownlinkPreemption IE in specific message types, posing a risk of assertion failure.
Affected Systems and Versions
Various Snapdragon products are impacted, including AR8035, QCA6390, QCA6436, SD765G, SD865 5G, SDX65, and more, across different applications.
Exploitation Mechanism
Attackers can leverage this vulnerability by crafting malicious messages to exploit the improper size validation and cause device malfunction or denial of service.
Mitigation and Prevention
To address CVE-2021-30326:
Immediate Steps to Take
- Implement patches provided by Qualcomm to fix the vulnerability promptly.
Long-Term Security Practices
- Regularly update the firmware and software of Snapdragon devices to mitigate potential security risks.
Patching and Updates
- Keep track of security bulletins and advisories from Qualcomm for any new patches or updates to safeguard the devices against known vulnerabilities.