CVE-2020-19909 : Exploit Details and Defense Strategies

This CVE record discusses an integer overflow vulnerability in curl 7.65.2 that could potentially lead to a denial of service to associated systems or networks.

Understanding CVE-2020-19909

What is CVE-2020-19909?

The CVE-2020-19909 is an integer overflow vulnerability found in tool_operate.c in curl 7.65.2. Although it may not directly impact curl users, it could potentially cause a denial of service to connected systems or networks under certain conditions.

The Impact of CVE-2020-19909

The vulnerability could result in a denial of service to associated systems or networks if misinterpreted, potentially leading to disruptions in service availability.

Technical Details of CVE-2020-19909

Vulnerability Description

The vulnerability arises from an integer overflow in tool_operate.c in curl 7.65.2 when a large value is used as the retry delay, potentially causing a denial of service.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions are affected.

Exploitation Mechanism

The overflow occurs when the user specifies a value that causes curl to wait an unusually long time before attempting to recover from a transient error.

Mitigation and Prevention

Immediate Steps to Take

Regularly monitor for security advisories related to curl.
Implement network-level controls to mitigate potential denial of service attacks.

Long-Term Security Practices

Keep curl and other software up to date with the latest security patches.
Conduct regular security assessments to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by the software vendor to address the integer overflow vulnerability in curl 7.65.2.