CVE-2022-39177 : Vulnerability Insights and Analysis
Discover the impact of CVE-2022-39177, a BlueZ denial of service vulnerability allowing attackers in close proximity to cause service disruption by exploiting malformed capabilities in AVDTP.C.
A denial of service vulnerability in BlueZ before version 5.59 is detailed in this CVE.
Understanding CVE-2022-39177
This section provides an overview of the CVE-2022-39177 vulnerability.
What is CVE-2022-39177?
The CVE-2022-39177 CVE describes a vulnerability in BlueZ that allows physically proximate attackers to cause a denial of service. The issue arises due to malformed and invalid capabilities being processed in profiles/audio/avdtp.c.
The Impact of CVE-2022-39177
The impact of this vulnerability is the potential for a denial of service attack by malicious entities abusing the flaw in BlueZ that permits processing of malformed and invalid capabilities.
Technical Details of CVE-2022-39177
In this section, we discuss the technical aspects of CVE-2022-39177.
Vulnerability Description
The vulnerability in BlueZ before version 5.59 enables physically close attackers to trigger a denial of service by exploiting the mishandling of malformed and invalid capabilities in profiles/audio/avdtp.c.
Affected Systems and Versions
All versions of BlueZ before 5.59 are affected by this vulnerability.
Exploitation Mechanism
Attackers in close physical proximity can exploit this vulnerability by sending specially crafted packets containing malformed or invalid capabilities to targeted devices running vulnerable versions of BlueZ.
Mitigation and Prevention
This section provides guidance on mitigating the risks posed by CVE-2022-39177.
Immediate Steps to Take
To mitigate the risk associated with CVE-2022-39177, it is essential to update BlueZ to version 5.59 or later. Additionally, physical security measures should be implemented to prevent unauthorized access to vulnerable devices.
Long-Term Security Practices
Implementing network segmentation, restricting physical access to devices, and maintaining regular security updates can enhance the long-term security posture against similar vulnerabilities.
Patching and Updates
Regularly monitor vendor security advisories and apply patches promptly to address known vulnerabilities in BlueZ and other software components.