CVE-2023-41910 : What You Need to Know
CVE-2023-41910 is a vulnerability in lldpd before 1.0.17 that allows remote attackers to trigger an out-of-bounds read on heap memory. Learn about the impact, technical details, and mitigation steps.
An issue was discovered in lldpd before 1.0.17, where a malicious actor can force the lldpd daemon to perform an out-of-bounds read on heap memory by crafting a specific CDP PDU packet. This vulnerability exists in cdp_decode in daemon/protocols/cdp.c.
Understanding CVE-2023-41910
This section delves into the details of CVE-2023-41910.
What is CVE-2023-41910?
CVE-2023-41910 is a security vulnerability found in lldpd before version 1.0.17. It allows a remote attacker to trigger an out-of-bounds read on heap memory by manipulating CDP PDU packets.
The Impact of CVE-2023-41910
Exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information, denial of service, or potentially arbitrary code execution, posing a significant threat to affected systems.
Technical Details of CVE-2023-41910
In this section, we explore the technical aspects of CVE-2023-41910.
Vulnerability Description
The vulnerability arises from the improper handling of specific CDP_TLV_ADDRESSES TLVs, leading to the out-of-bounds read in the cdp_decode function.
Affected Systems and Versions
The issue affects lldpd versions prior to 1.0.17. As such, systems running these versions are vulnerable to exploitation.
Exploitation Mechanism
A threat actor can exploit the vulnerability by crafting a CDP PDU packet with malicious CDP_TLV_ADDRESSES TLVs, triggering the out-of-bounds read on heap memory.
Mitigation and Prevention
This section covers the measures to mitigate and prevent the exploitation of CVE-2023-41910.
Immediate Steps to Take
Users and administrators are advised to update lldpd to version 1.0.17 or later to mitigate the vulnerability. Additionally, implementing network segmentation and access controls can help reduce the attack surface.
Long-Term Security Practices
Regularly monitoring vendor security advisories and promptly applying patches is crucial to maintaining a secure network infrastructure. Security awareness training for employees can also bolster overall defense against cyber threats.
Patching and Updates
Stay informed about security updates and patches released by the vendor. Keeping software and systems up-to-date with the latest patches and security fixes is essential for protecting against known vulnerabilities.