CVE-2019-3994 : Exploit Details and Defense Strategies
Learn about CVE-2019-3994, a denial of service vulnerability in ELOG versions 3.1.4-57bea22 and below. Understand the impact, affected systems, exploitation method, and mitigation steps.
A denial of service vulnerability affecting ELOG versions 3.1.4-57bea22 and earlier has been identified. This vulnerability is caused by a use after free issue, where a remote unauthenticated attacker can exploit it by sending multiple HTTP POST requests. By doing so, the ELOG server crashes as the retrieve_url() function in ELOG mistakenly utilizes a variable that has already been freed.
Understanding CVE-2019-3994
This CVE involves a denial of service vulnerability in ELOG versions 3.1.4-57bea22 and below due to a use after free issue.
What is CVE-2019-3994?
CVE-2019-3994 is a vulnerability in ELOG versions 3.1.4-57bea22 and earlier that allows a remote unauthenticated attacker to crash the ELOG server by exploiting a use after free flaw.
The Impact of CVE-2019-3994
- An unauthenticated attacker can exploit the vulnerability by sending multiple HTTP POST requests, leading to a server crash.
Technical Details of CVE-2019-3994
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in ELOG 3.1.4-57bea22 and below is a use after free issue that can be triggered by a remote attacker through HTTP POST requests.
Affected Systems and Versions
- Product: ELOG
- Vendor: n/a
- Versions Affected: ELOG 3.1.4-57bea22 and below
Exploitation Mechanism
- Attackers can exploit the vulnerability by sending multiple HTTP POST requests, causing the ELOG server to crash.
Mitigation and Prevention
To address CVE-2019-3994, follow these mitigation strategies:
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Implement network security measures to restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly monitor and update software to address security vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses.
Patching and Updates
- Check for patches or updates from the vendor regularly.
- Apply security patches as soon as they are available to mitigate the risk of exploitation.