CVE-2019-17666 Explained : Impact and Mitigation
Learn about CVE-2019-17666, a buffer overflow vulnerability in the Linux kernel up to version 5.3.6, potentially allowing attackers to crash or compromise nearby devices. Find mitigation steps and patching instructions here.
A buffer overflow vulnerability in the Linux kernel up to version 5.3.6 due to a missing upper-bound check in the rtl_p2p_noa_ie function.
Understanding CVE-2019-17666
The vulnerability in the Linux kernel can lead to a buffer overflow, potentially exploited by attackers.
What is CVE-2019-17666?
The absence of a specific upper-bound check in the rtl_p2p_noa_ie function within the ps.c file in the Linux kernel up to version 5.3.6 results in a buffer overflow vulnerability.
The Impact of CVE-2019-17666
The buffer overflow vulnerability can be exploited by attackers to crash or compromise nearby devices.
Technical Details of CVE-2019-17666
The technical aspects of the vulnerability in the Linux kernel.
Vulnerability Description
The rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a certain upper-bound check, leading to a buffer overflow.
Affected Systems and Versions
- Affected systems: Linux kernel up to version 5.3.6
- Affected versions: n/a
Exploitation Mechanism
The vulnerability can be exploited by triggering a buffer overflow, potentially leading to a crash or compromise of nearby devices.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2019-17666 vulnerability.
Immediate Steps to Take
- Apply relevant security patches provided by Linux distributions and vendors.
- Monitor vendor advisories for updates and follow best security practices.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
- Refer to vendor-specific security advisories for patching instructions and updates.