CVE-2018-1114 : Exploit Details and Defense Strategies
Discover the impact of CVE-2018-1114 in Undertow by Red Hat. Learn about the vulnerability, its technical details, and mitigation steps to prevent file descriptor leakage.
Undertow in Red Hat was found to have a vulnerability that could lead to file descriptor leakage due to improper handling of file closures.
Understanding CVE-2018-1114
A vulnerability in Undertow could result in file descriptor depletion and file handler leakage.
What is CVE-2018-1114?
The vulnerability in Undertow's URLResource.getLastModified() method can exhaust file descriptors, potentially causing file handler leakage.
The Impact of CVE-2018-1114
- CVSS Base Score: 6.5 (Medium Severity)
- Attack Vector: Network
- Availability Impact: High
- No Confidentiality or Integrity Impact
- Low Privileges Required
Technical Details of CVE-2018-1114
The technical details of the CVE-2018-1114 vulnerability in Undertow.
Vulnerability Description
The issue arises from the improper closure of file descriptors in Undertow, leading to potential file handler leakage.
Affected Systems and Versions
- Affected Product: Undertow
- Vendor: Red Hat
- Affected Version: Not Applicable
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to exhaust file descriptors and cause file handler leakage.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2018-1114 vulnerability.
Immediate Steps to Take
- Apply the patches provided by Red Hat.
- Monitor file descriptor usage on affected systems.
Long-Term Security Practices
- Regularly update and patch Undertow and related software.
- Implement proper file descriptor management practices.
Patching and Updates
- Refer to Red Hat Security Advisories RHSA-2018:2669, RHSA-2018:2643, and RHSA-2019:0877 for patching instructions and updates.