CVE-2019-1010220 : What You Need to Know
Learn about CVE-2019-1010220, a Buffer Over-read vulnerability in tcpdump version 4.9.2 from tcpdump.org. Discover the impact, affected systems, exploitation mechanism, and mitigation steps.
The version 4.9.2 of tcpdump from tcpdump.org is susceptible to a Buffer Over-read vulnerability identified as CWE-126. This vulnerability could potentially expose critical information such as the Saved Frame Pointer, Return Address, and other stack-related data. The specific component affected is line 234 in the function named "print_prefix" within the "print-hncp.c" file. To exploit this vulnerability, the victim must unknowingly open a specifically crafted pcap file.
Understanding CVE-2019-1010220
CVE-2019-1010220 is a Buffer Over-read vulnerability affecting tcpdump version 4.9.2 from tcpdump.org.
What is CVE-2019-1010220?
CVE-2019-1010220 is a vulnerability that could lead to the exposure of critical stack-related data when a specially crafted pcap file is opened in tcpdump version 4.9.2.
The Impact of CVE-2019-1010220
This vulnerability may expose sensitive information like the Saved Frame Pointer and Return Address, potentially leading to security breaches and unauthorized access to data.
Technical Details of CVE-2019-1010220
CVE-2019-1010220 technical specifics and affected systems.
Vulnerability Description
The vulnerability is a Buffer Over-read issue in tcpdump version 4.9.2, allowing attackers to access critical stack data by exploiting a specific component in the "print-hncp.c" file.
Affected Systems and Versions
- Product: tcpdump
- Vendor: tcpdump.org
- Version: 4.9.2
Exploitation Mechanism
The vulnerability can be exploited by tricking a user into opening a maliciously crafted pcap file, triggering the Buffer Over-read flaw.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2019-1010220.
Immediate Steps to Take
- Update tcpdump to a patched version that addresses the Buffer Over-read vulnerability.
- Avoid opening untrusted pcap files to minimize the risk of exploitation.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Educate users on safe file handling practices to prevent opening malicious files.
Patching and Updates
Ensure that tcpdump is regularly updated to the latest version to mitigate known vulnerabilities and enhance overall system security.