CVE-2022-26477 : Vulnerability Insights and Analysis

Apache SystemDS version less than 2.2.2 is impacted by a denial of service vulnerability in the readExternal method. The issue allows an attacker to cause CPU exhaustion by manipulating the termination condition of a for loop. The Apache Security Team identified this as a controllable variable that could be exploited. To address this, upper bounds and termination conditions were added to the read and write logic in versions above 2.2.1.

Understanding CVE-2022-26477

This CVE affects Apache SystemDS, specifically versions lower than 2.2.2, due to a vulnerability in the readExternal method. By exploiting this flaw, an attacker could potentially exhaust the CPU resources of the system, leading to denial of service.

What is CVE-2022-26477?

The Security Team discovered a vulnerability in the termination condition of a for loop within the readExternal method of Apache SystemDS. By tampering with this condition, an attacker could trigger CPU exhaustion, impacting system performance and availability.

The Impact of CVE-2022-26477

The vulnerability poses a risk of denial of service, allowing malicious actors to disrupt system availability by consuming excessive CPU resources. This could result in system slowdowns, unresponsiveness, or crashes.

Technical Details of CVE-2022-26477

The following technical aspects are associated with CVE-2022-26477:

Vulnerability Description

The vulnerability arises from the controllable termination condition in the for loop of the readExternal method, enabling attackers to exhaust CPU resources.

Affected Systems and Versions

Apache SystemDS versions below 2.2.2 are susceptible to this vulnerability, emphasizing the importance of updating to versions above 2.2.1 for secure operations.

Exploitation Mechanism

By manipulating the termination condition of the for loop in the readExternal method, threat actors can induce CPU exhaustion, thereby launching a denial of service attack.

Mitigation and Prevention

To address CVE-2022-26477, consider the following mitigation strategies:

Immediate Steps to Take

Upgrade Apache SystemDS to version 2.2.2 or higher to mitigate the vulnerability and enhance system security.

Long-Term Security Practices

Regularly monitor and apply security patches to stay protected against known vulnerabilities.

Patching and Updates

Stay informed about security advisories from Apache Software Foundation and promptly apply updates to ensure a secure software environment.