CVE-2020-25927 Denial of service in n/a
A remote attacker can cause a denial of service in InterNiche NicheStack TCP/IP by sending a malformed DNS response packet that triggers an out-of-bounds read.
- 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-2020-25927?
CVE-2020-25927 is a high-severity denial of service vulnerability in n/a, published on 18 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service (remote). The component is: DNS response processing in function: dns_upcall(). The attack vector is: a specific DNS response packet. The code does not check whether the number of queries/responses specified in the DNS packet header corresponds to the query/response data available in the DNS packet.
Weakness: CWE-125
Which versions are affected by CVE-2020-25927?
It affects 1 product.
Products include Hcc-Embedded Nichestack Tcp\/Ip.
How do I fix CVE-2020-25927?
No fix has been published for CVE-2020-25927 yet. Limit exposure of the affected software until one is available.
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-2020-25927 being exploited?
There is no known exploitation of CVE-2020-25927 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-pfcm-j5pc-4mx7.