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CVE-2020-24837

7.5 · HIGH

An integer underflow has been found in the latest version of ZCFees.

Published Feb 10, 2021CWE-191EPSS 1.57%

Overview

CVE-2020-24837 is a high-severity vulnerability. It was published on February 10, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An integer underflow has been found in the latest version of ZCFees. The variables 'currPeriodIdx' and 'lastPeriodExecIdx' are both unsigned integers, and the result of the minus operation may be a negative integer which leads to an underflow. The attackers can modify the current timestamp of the transaction somehow and block the execution of the process function.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refetherscan.io/address/0x9d79c6e2a0222b9ac7bfabc447209c58fe9e0dcc#codeRefetherscan.io/address/0x9d79c6e2a0222b9ac7bfabc447209c58fe9e0dcc#code

How CyberStrike helps

Frequently asked questions

What is CVE-2020-24837?

CVE-2020-24837 is a high-severity vulnerability. It was published on February 10, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-24837?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-24837?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-24837?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-24837 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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