CVE-2018-6540 : What You Need to Know
Learn about CVE-2018-6540 affecting ZZIPlib version 0.13.67. Remote attackers can exploit this bus error vulnerability to cause a denial of service. Find mitigation steps here.
ZZIPlib version 0.13.67 is vulnerable to a bus error due to an incorrectly aligned address in the zzip_disk_findfirst function. This could be exploited by remote attackers using a specially crafted zip file, leading to a denial of service.
Understanding CVE-2018-6540
This CVE entry describes a vulnerability in ZZIPlib version 0.13.67 that could be exploited remotely to cause a denial of service.
What is CVE-2018-6540?
The vulnerability in ZZIPlib version 0.13.67 arises from a bus error triggered by loading an incorrectly aligned address in the zzip_disk_findfirst function of zzip/mmapped.c. Remote attackers can exploit this flaw using a specially crafted zip file to launch a denial of service attack.
The Impact of CVE-2018-6540
The exploitation of this vulnerability could result in a denial of service condition, potentially disrupting the availability of the affected system.
Technical Details of CVE-2018-6540
This section provides technical details about the vulnerability.
Vulnerability Description
The vulnerability in ZZIPlib version 0.13.67 is caused by a bus error resulting from the loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c.
Affected Systems and Versions
- Product: ZZIPlib
- Vendor: N/A
- Version: 0.13.67
Exploitation Mechanism
Remote attackers can exploit this vulnerability by using a specially crafted zip file to trigger the bus error, leading to a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2018-6540 involves taking immediate steps and implementing long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor and restrict network access to vulnerable systems.
- Employ network intrusion detection/prevention systems to detect and block exploit attempts.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses.
- Educate users and administrators about safe computing practices.
Patching and Updates
Ensure that the affected ZZIPlib version 0.13.67 is updated with the latest security patches to mitigate the vulnerability.