CVE-2017-18313 : Security Advisory and Response

CVE-2017-18313, published on October 23, 2018, by Qualcomm, Inc., affects Snapdragon Mobile and Snapdragon Wear devices. The vulnerability allows HLOS to tamper with validated WCNSS firmware, potentially compromising device security.

Understanding CVE-2017-18313

This CVE entry highlights an improper access control issue in WLAN on specific Qualcomm chipsets.

What is CVE-2017-18313?

The vulnerability in certain operational modes enables HLOS to access and manipulate authenticated WCNSS firmware stored in DDR through DXE channels on Snapdragon Mobile and Snapdragon Wear devices.

The Impact of CVE-2017-18313

The vulnerability poses a security risk as it allows unauthorized tampering with validated firmware, potentially leading to device compromise and data breaches.

Technical Details of CVE-2017-18313

Qualcomm Snapdragon Mobile and Snapdragon Wear devices are affected by this vulnerability.

Vulnerability Description

In certain operational modes, HLOS can gain access to tamper with validated WCNSS firmware stored in DDR through DXE channels on affected Qualcomm chipsets.

Affected Systems and Versions

Products: Snapdragon Mobile, Snapdragon Wear
Versions: MSM8909W, SD 210/SD 212/SD 205, SD 410/12, SD 615/16/SD 415, SD 617

Exploitation Mechanism

The vulnerability allows HLOS to directly or indirectly access and manipulate authenticated WCNSS firmware stored in DDR due to the proximity of DXE-accessible memory within the validated image.

Mitigation and Prevention

Immediate Steps to Take:

Apply security patches provided by Qualcomm
Monitor official security bulletins for updates

Long-Term Security Practices:

Regularly update firmware and software
Implement network segmentation and access controls

Patching and Updates:

Stay informed about security advisories from Qualcomm
Apply patches promptly to mitigate the vulnerability