CVE-2020-4581 Explained : Impact and Mitigation

IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.12 is susceptible to a denial of service vulnerability through a specific HTTP/2 request.

Understanding CVE-2020-4581

IBM DataPower Gateway versions 2018.4.1.0 to 2018.4.1.12 are impacted by a denial of service flaw that could be exploited remotely.

What is CVE-2020-4581?

The vulnerability in IBM DataPower Gateway versions 2018.4.1.0 through 2018.4.1.12 allows a remote attacker to trigger a denial of service by sending a chunked transfer-encoding HTTP/2 request.

The Impact of CVE-2020-4581

CVSS Base Score: 7.5 (High)
CVSS Vector: CVSS:3.0/S:U/UI:N/AC:L/C:N/I:N/PR:N/A:H/AV:N/RC:C/RL:O/E:U
Availability Impact: High
Attack Complexity: Low
Base Severity: High
Exploit Code Maturity: Unproven
Report Confidence: Confirmed
Temporal Score: 6.5 (Medium)

Technical Details of CVE-2020-4581

Vulnerability Description

The vulnerability allows a remote attacker to cause a denial of service by exploiting a specific HTTP/2 request.

Affected Systems and Versions

Product: DataPower Gateway
Vendor: IBM
Versions Affected: 2018.4.1.0, 2018.4.1.12

Exploitation Mechanism

The vulnerability can be exploited by sending a chunked transfer-encoding HTTP/2 request to the affected IBM DataPower Gateway versions.

Mitigation and Prevention

Immediate Steps to Take

Apply the official fix provided by IBM to address the vulnerability.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch the IBM DataPower Gateway software.
Implement network security measures to detect and prevent similar attacks.

Patching and Updates

Ensure that the IBM DataPower Gateway software is kept up to date with the latest security patches and fixes.