CVE-2018-19975 : What You Need to Know
Learn about CVE-2018-19975, a vulnerability in YARA 3.8.1 that allows attackers to read data from any memory address. Find out how to mitigate this security risk and protect your systems.
YARA version 3.8.1 contains a vulnerability that allows specially crafted compiled rules to read data from any memory address. This weakness is present in the libyara/exec.c file, specifically within the OP_COUNT operation.
Understanding CVE-2018-19975
This CVE entry highlights a security issue within the YARA tool that could be exploited by attackers to extract information from arbitrary memory locations.
What is CVE-2018-19975?
The vulnerability in YARA 3.8.1 enables malicious actors to use bytecode in a carefully crafted compiled rule to access data from any part of the computer's memory, particularly within the libyara/exec.c file.
The Impact of CVE-2018-19975
Exploiting this vulnerability could lead to unauthorized access to sensitive information stored in the computer's memory, potentially compromising the system's integrity and confidentiality.
Technical Details of CVE-2018-19975
YARA version 3.8.1 vulnerability details and affected systems.
Vulnerability Description
The flaw in YARA 3.8.1 allows attackers to read data from arbitrary memory addresses using a meticulously designed compiled rule, specifically within the OP_COUNT operation in libyara/exec.c.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by crafting a compiled rule that utilizes bytecode to extract data from any location in the computer's memory.
Mitigation and Prevention
Protecting systems from CVE-2018-19975.
Immediate Steps to Take
- Update YARA to a patched version that addresses the vulnerability.
- Monitor for any unusual activities that might indicate exploitation of this weakness.
Long-Term Security Practices
- Regularly update software and tools to mitigate potential vulnerabilities.
- Implement strong access controls and monitoring mechanisms to detect and prevent unauthorized access.
Patching and Updates
Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.