CVE-2020-25691 Denial of service in darkhttpd
Remote attackers can cause denial of service in darkhttpd by accessing files with large modification dates due to invalid error handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25691?
CVE-2020-25691 is a high-severity denial of service vulnerability in darkhttpd, published on 1 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in darkhttpd. Invalid error handling allows remote attackers to cause denial-of-service by accessing a file with a large modification date. The highest threat from this vulnerability is to system availability.
Weakness: CWE-755
Which versions are affected by CVE-2020-25691?
It affects 1 product.
Products include Unix4lyfe Darkhttpd.
How do I fix CVE-2020-25691?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-25691 being exploited?
There is no known exploitation of CVE-2020-25691 in the wild and no public exploit code.
Other vulnerabilities in darkhttpd
Sources
Also known as ALPINE-CVE-2020-25691, GHSA-4h33-v95w-8vh4.