CVE-2019-10064 : Exploit Details and Defense Strategies

In earlier versions of hostapd, specifically before 2.6, a vulnerability existed when operating in EAP mode due to the improper utilization of predictable values. This issue was addressed by making suitable corrections in conjunction with CVE-2016-10743.

Understanding CVE-2019-10064

This CVE entry pertains to a vulnerability in hostapd versions prior to 2.6 that could lead to the inappropriate use of deterministic values when rand() and random() functions are called without preceding srand() or srandom() calls.

What is CVE-2019-10064?

The vulnerability in hostapd versions before 2.6 occurs in EAP mode, where rand() and random() functions are used without proper seeding, resulting in predictable values.

The Impact of CVE-2019-10064

Attackers could exploit this vulnerability to predict values used in cryptographic operations, potentially compromising the security of the system.

Technical Details of CVE-2019-10064

This section provides more in-depth technical information about the vulnerability.

Vulnerability Description

Hostapd before version 2.6, when operating in EAP mode, calls rand() and random() functions without preceding srand() or srandom() calls, leading to the improper use of deterministic values.

Affected Systems and Versions

Versions of hostapd prior to 2.6 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to predict values used in cryptographic operations, potentially undermining the security of the system.

Mitigation and Prevention

To address and prevent the exploitation of CVE-2019-10064, the following steps can be taken:

Immediate Steps to Take

Update hostapd to version 2.6 or later to mitigate the vulnerability.
Implement proper seeding mechanisms for random number generation functions.

Long-Term Security Practices

Regularly update software and firmware to the latest versions to address known vulnerabilities.
Implement secure coding practices to prevent similar issues in the future.

Patching and Updates

Stay informed about security updates and patches released by the vendor to address vulnerabilities like CVE-2019-10064.