CVE-2020-24837
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductZcfees
PublishedFeb 10, 2021
First seenFeb 10, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zcfees_project zcfees | No range specified | — |
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