CVE-2021-35100 : What You Need to Know

This article provides detailed information about CVE-2021-35100, a vulnerability affecting a wide range of Qualcomm products and versions.

Understanding CVE-2021-35100

CVE-2021-35100 is a security flaw that leads to possible buffer over-read due to incorrect string length calculation when parsing Id3 tags in various Qualcomm products.

What is CVE-2021-35100?

The vulnerability in CVE-2021-35100 impacts multiple Qualcomm products such as Snapdragon Auto, Compute, Connectivity, Industrial IOT, Mobile, Voice & Music, and Wearables, potentially resulting in a buffer over-read issue.

The Impact of CVE-2021-35100

The vulnerability has been rated with a CVSS base score of 7.5, indicating a high severity level. It could allow attackers to exploit the affected systems, leading to potential availability impact.

Technical Details of CVE-2021-35100

CVE-2021-35100 is characterized by a low attack complexity, network-based attack vector, and high availability impact. No privileges are required for exploitation, and user interaction is not necessary.

Vulnerability Description

The vulnerability involves improper calculation of string length while processing Id3 tags, resulting in a buffer over-read possibility in the specified Qualcomm products and versions.

Affected Systems and Versions

Multiple Qualcomm products ranging from Snapdragon Auto to Wearables are impacted by this vulnerability. A wide array of versions including APQ8009W, APQ8017, MDM9206, SD 675, and more are affected.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability by leveraging the incorrect calculation of string length during Id3 tag parsing, leading to buffer over-read situations.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-35100, immediate action and long-term security practices are recommended.

Immediate Steps to Take

Organizations are advised to apply security patches and updates provided by Qualcomm for the affected products and versions. Additionally, monitoring network traffic for any suspicious activity can help in detecting potential exploitation attempts.

Long-Term Security Practices

Implementing network segmentation, regular security audits, and maintaining up-to-date intrusion detection systems are essential for safeguarding against similar security vulnerabilities in the future.

Patching and Updates

Qualcomm has released security bulletins, including patches and updates, to address CVE-2021-35100. It is crucial for organizations to promptly apply these patches to ensure the protection and integrity of their systems.