CVE-2017-12865 : What You Need to Know

CVE-2017-12865, published on August 29, 2017, addresses a stack-based buffer overflow vulnerability in connman versions 1.34 and earlier. This vulnerability could allow remote attackers to crash the system or execute arbitrary code.

Understanding CVE-2017-12865

This CVE entry highlights a critical security issue in connman that could be exploited by malicious actors to compromise systems.

What is CVE-2017-12865?

The vulnerability in the "dnsproxy.c" file in connman versions 1.34 and earlier allows remote attackers to trigger a stack-based buffer overflow by sending a specially crafted response query string to the "name" variable. This could lead to a denial of service or arbitrary code execution.

The Impact of CVE-2017-12865

The exploitation of this vulnerability could result in system crashes or unauthorized execution of code, posing a significant risk to the security and stability of affected systems.

Technical Details of CVE-2017-12865

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The stack-based buffer overflow in "dnsproxy.c" in connman versions 1.34 and earlier enables attackers to disrupt system operations or execute malicious code through a manipulated query string.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions of connman up to 1.34

Exploitation Mechanism

The vulnerability is exploited by sending a specifically crafted response query string to the "name" variable in the "dnsproxy.c" file, triggering the buffer overflow.

Mitigation and Prevention

In response to CVE-2017-12865, it is crucial to implement immediate and long-term security measures to mitigate risks and protect systems.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Monitor network traffic for any suspicious activities related to DNS queries.
Consider implementing network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Keep systems and software up to date to address known security issues.
Educate users and IT staff on best practices for handling sensitive information and recognizing phishing attempts.

Patching and Updates

Stay informed about security advisories and updates from connman and relevant vendors.
Apply patches and updates as soon as they are released to address known vulnerabilities and enhance system security.