CVE-2018-7039 : Exploit Details and Defense Strategies

CCN-lite 2.0.0 Beta has a vulnerability that can be exploited by attackers remotely to cause a denial of service (buffer overflow) or potentially have other impacts. The issue lies in the ccnl_ndntlv_prependBlob function within ccnl-pkt-ndntlv.c, where incorrect arguments can be provided. This results in an incorrect integer data type, leading to a negative third argument in certain cases of manipulated TLV data containing inconsistent length information.

Understanding CVE-2018-7039

CCN-lite 2.0.0 Beta allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because the ccnl_ndntlv_prependBlob function in ccnl-pkt-ndntlv.c can be called with wrong arguments. Specifically, there is an incorrect integer data type causing a negative third argument in some cases of crafted TLV data with inconsistent length information.

What is CVE-2018-7039?

CVE-2018-7039 is a vulnerability in CCN-lite 2.0.0 Beta that enables remote attackers to trigger a denial of service or other potential impacts by manipulating TLV data.

The Impact of CVE-2018-7039

Attackers can exploit this vulnerability remotely to cause a denial of service through a buffer overflow or potentially have other impacts.

Technical Details of CVE-2018-7039

CCN-lite 2.0.0 Beta is affected by a vulnerability that allows attackers to exploit the ccnl_ndntlv_prependBlob function, leading to a negative third argument in certain cases of manipulated TLV data.

Vulnerability Description

The vulnerability in CCN-lite 2.0.0 Beta arises from incorrect arguments provided to the ccnl_ndntlv_prependBlob function, resulting in an incorrect integer data type and a negative third argument in specific cases of manipulated TLV data.

Affected Systems and Versions

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Vendor: n/a
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Exploitation Mechanism

Attackers can exploit this vulnerability remotely by manipulating TLV data with inconsistent length information, causing a negative third argument in the ccnl_ndntlv_prependBlob function.

Mitigation and Prevention

To address CVE-2018-7039, follow these steps:

Immediate Steps to Take

Apply patches or updates provided by the vendor.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update software and systems to the latest versions.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories and patches released by the vendor.