CVE-2019-7146 Explained : Impact and Mitigation
Learn about CVE-2019-7146, a vulnerability in elfutils 0.175 that allows remote attackers to cause a denial-of-service through a buffer over-read. Find out how to mitigate this issue and protect your systems.
CVE-2019-7146 was published on January 29, 2019, and affects elfutils version 0.175. The vulnerability in the ebl_object_note function in libebl can be exploited by remote attackers to cause a denial-of-service through a buffer over-read.
Understanding CVE-2019-7146
This CVE entry describes a specific vulnerability in elfutils version 0.175 that can lead to a denial-of-service attack.
What is CVE-2019-7146?
The ebl_object_note function in eblobjnote.c in libebl within elfutils 0.175 is susceptible to a buffer over-read vulnerability. Attackers can trigger a denial-of-service by exploiting this flaw using a specially crafted elf file, as demonstrated in the case of eu-readelf.
The Impact of CVE-2019-7146
The vulnerability allows remote attackers to execute a denial-of-service attack by exploiting a buffer over-read in elfutils 0.175.
Technical Details of CVE-2019-7146
This section provides more technical insights into the CVE-2019-7146 vulnerability.
Vulnerability Description
The ebl_object_note function in eblobjnote.c in libebl within elfutils 0.175 contains a vulnerability that can be exploited by remote attackers to cause a denial-of-service through a buffer over-read.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by using a specially crafted elf file, as demonstrated in the case of eu-readelf.
Mitigation and Prevention
Protecting systems from CVE-2019-7146 involves taking immediate steps and implementing long-term security practices.
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor security advisories for updates and follow best practices for secure coding.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Conduct security assessments and audits to identify and address vulnerabilities proactively.
- Implement network segmentation and access controls to limit the impact of potential attacks.
- Educate users and administrators about safe computing practices.
- Consider using security tools like intrusion detection systems and firewalls.
Patching and Updates
Ensure that the affected systems are updated with the latest patches released by the vendor to mitigate the vulnerability.