CVE-2019-14119 : Exploit Details and Defense Strategies
Learn about CVE-2019-14119, a TOCTOU race condition vulnerability in Qualcomm Snapdragon products, potentially leading to memory corruption. Find out affected systems, exploitation details, and mitigation steps.
A TOCTOU race condition and memory corruption vulnerability have been identified in various Qualcomm Snapdragon products.
Understanding CVE-2019-14119
This CVE involves a Time of Check Time of Use (TOCTOU) race condition in Qualcomm Trusted Execution Environment (QTEE).
What is CVE-2019-14119?
The vulnerability occurs when processing the SMCInvoke asynchronous message header, leading to a modification in the message count, potentially resulting in memory corruption.
The Impact of CVE-2019-14119
The TOCTOU race condition could be exploited by attackers to manipulate the message count, causing memory corruption and potentially enabling unauthorized access or system crashes.
Technical Details of CVE-2019-14119
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from a race condition during the processing of the SMCInvoke asynchronous message header, allowing for unauthorized modification of the message count.
Affected Systems and Versions
- Products: Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, Mobile, Voice & Music, Wired Infrastructure and Networking
- Versions: IPQ6018, Kamorta, MDM9205, MDM9607, Nicobar, QCS404, QCS405, QCS605, QCS610, Rennell, SA415M, SA515M, SA6155P, SC7180, SC8180X, SDM670, SDM710, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130
Exploitation Mechanism
The vulnerability is exploited by manipulating the SMCInvoke asynchronous message header to modify the message count, leading to memory corruption.
Mitigation and Prevention
To address CVE-2019-14119, follow these mitigation strategies:
Immediate Steps to Take
- Apply patches provided by Qualcomm to fix the vulnerability.
- Monitor for any unusual system behavior that could indicate exploitation.
Long-Term Security Practices
- Regularly update software and firmware to ensure the latest security patches are in place.
- Implement access controls and monitoring mechanisms to detect and prevent unauthorized access.
Patching and Updates
- Install the latest security updates and patches released by Qualcomm to mitigate the vulnerability.