VulnerabilityModified
CVE-2020-24837
The attackers can modify the current timestamp of the transaction somehow and block the execution of the process function.
HIGH 7.5EPSS 1.57%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.57% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-191
- Affected
- zcfees project/zcfees
- Source
- cve@mitre.org
References
- https://etherscan.io/address/0x9d79c6e2a0222b9ac7bfabc447209c58fe9e0dcc#codePatch, Third Party Advisory
- https://etherscan.io/address/0x9d79c6e2a0222b9ac7bfabc447209c58fe9e0dcc#codePatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.