CVE-2018-0360 : What You Need to Know
Learn about CVE-2018-0360, a critical vulnerability in ClamAV before 0.100.1 that allows for an infinite loop via a crafted Hangul Word Processor file. Find mitigation steps and long-term security practices here.
ClamAV before version 0.100.1 is vulnerable to an HWP integer overflow issue that can result in an infinite loop when processing a specially crafted Hangul Word Processor file.
Understanding CVE-2018-0360
This CVE entry highlights a critical vulnerability in ClamAV that could be exploited by an attacker to cause denial of service or potentially execute arbitrary code.
What is CVE-2018-0360?
The vulnerability in ClamAV before 0.100.1 is due to an integer overflow in the parsehwp3_paragraph() function within the libclamav/hwp.c file. This flaw can be triggered by processing a malicious Hangul Word Processor file.
The Impact of CVE-2018-0360
Exploitation of this vulnerability could lead to an infinite loop condition, potentially resulting in a denial of service (DoS) or the execution of arbitrary code by an attacker.
Technical Details of CVE-2018-0360
This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability in ClamAV before 0.100.1 stems from an HWP integer overflow issue that resides in the parsehwp3_paragraph() function within the libclamav/hwp.c file.
Affected Systems and Versions
- Product: ClamAV before 0.100.1 unknown
- Vendor: n/a
- Versions: ClamAV before 0.100.1 unknown
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious Hangul Word Processor file to trigger the integer overflow in the vulnerable parsehwp3_paragraph() function.
Mitigation and Prevention
Protecting systems from CVE-2018-0360 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update ClamAV to version 0.100.1 or later to mitigate the vulnerability.
- Consider blocking or monitoring Hangul Word Processor files from untrusted sources.
Long-Term Security Practices
- Regularly update and patch all software to prevent known vulnerabilities.
- Implement network and host-based intrusion detection/prevention systems to detect and block potential attacks.
- Educate users on safe browsing habits and the risks associated with opening files from unknown sources.
Patching and Updates
- Stay informed about security advisories and updates from ClamAV and relevant vendors.
- Apply patches promptly to ensure systems are protected against known vulnerabilities.