CVE-2020-24837 Integer overflow in n/a
An integer underflow in ZCFees allows attackers to block process execution by manipulating transaction timestamps, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-24837?
CVE-2020-24837 is a high-severity vulnerability in n/a, published on 10 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-191
Which versions are affected by CVE-2020-24837?
It affects 1 product.
Products include Zcfees Project Zcfees.
How do I fix CVE-2020-24837?
No fix has been published for CVE-2020-24837 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-24837 being exploited?
There is no known exploitation of CVE-2020-24837 in the wild and no public exploit code.
Sources
Also known as GHSA-qwpm-85r5-4m77.