CVE-2017-1085 : What You Need to Know
Learn about CVE-2017-1085, a vulnerability in FreeBSD versions before 11.2-RELEASE that could allow unauthorized code execution. Find mitigation steps and prevention measures here.
In versions of FreeBSD older than 11.2-RELEASE, a vulnerability exists that could allow a maliciously crafted executable to execute unauthorized code within the user's context.
Understanding CVE-2017-1085
What is CVE-2017-1085?
In FreeBSD versions before 11.2-RELEASE, an issue arises when an application uses setrlimit() to increase RLIMIT_STACK, potentially converting a read-only memory section below the stack into a writable section, leading to a security risk.
The Impact of CVE-2017-1085
This vulnerability could be exploited by a specially crafted executable to execute arbitrary code within the user's context, posing a significant security threat.
Technical Details of CVE-2017-1085
Vulnerability Description
In FreeBSD versions before 11.2-RELEASE, a flaw allows an application to inadvertently change a read-only memory region below the stack into a read-write region, creating a potential security loophole.
Affected Systems and Versions
- Product: FreeBSD
- Vendor: FreeBSD
- Versions Affected: Before 11.2-RELEASE
Exploitation Mechanism
The vulnerability can be exploited by a maliciously crafted executable to execute unauthorized code within the user's context.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade affected systems to FreeBSD 11.2-RELEASE or later to mitigate the vulnerability.
- Monitor for any unauthorized code execution or unusual activities on the system.
Long-Term Security Practices
- Regularly update and patch FreeBSD systems to address security vulnerabilities promptly.
Patching and Updates
Apply security patches and updates provided by FreeBSD to ensure the system is protected against known vulnerabilities.