CVE-2018-12248 : Security Advisory and Response
Discover the impact of CVE-2018-12248, a vulnerability in mruby 1.4.1 leading to a heap-based buffer over-read. Learn about affected systems, exploitation, and mitigation steps.
A problem has been found in mruby 1.4.1 concerning OP_ENTER. This problem involves a heap-based buffer over-read that occurs when mrbgems/mruby-fiber/src/fiber.c fails to extend the stack in situations where there are many arguments to fiber.
Understanding CVE-2018-12248
An issue was discovered in mruby 1.4.1. There is a heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber.
What is CVE-2018-12248?
CVE-2018-12248 is a vulnerability found in mruby 1.4.1 related to a heap-based buffer over-read in the OP_ENTER function.
The Impact of CVE-2018-12248
This vulnerability could potentially lead to a heap-based buffer over-read, compromising the integrity and security of the affected system.
Technical Details of CVE-2018-12248
CVE-2018-12248 pertains to a specific issue within the mruby 1.4.1 codebase.
Vulnerability Description
The vulnerability involves a heap-based buffer over-read triggered by the failure to extend the stack in situations with numerous arguments to fiber.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by an attacker to trigger a heap-based buffer over-read by manipulating arguments to fiber.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-12248.
Immediate Steps to Take
- Apply relevant patches or updates provided by mruby to mitigate the vulnerability.
- Monitor for any unusual activities that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and dependencies to ensure the latest security patches are in place.
- Conduct security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security advisories from mruby and promptly apply any patches or updates released to address CVE-2018-12248.