CVE-2020-24339 Denial of service in n/a
Attackers can cause a denial of service in applications using picoTCP by sending malformed DNS responses that trigger out-of-bounds reads.
- 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-2020-24339?
CVE-2020-24339 is a high-severity denial of service vulnerability in n/a, published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_common.c does not validate the compression pointer offset values with respect to the actual data present in a DNS response packet, causing out-of-bounds reads that lead to Denial-of-Service.
Weakness: CWE-125
Which versions are affected by CVE-2020-24339?
It affects 2 products.
Products include Altran Picotcp, Altran Picotcp-Ng.
How do I fix CVE-2020-24339?
No fix has been published for CVE-2020-24339 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-2020-24339 being exploited?
There is no known exploitation of CVE-2020-24339 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-54j5-rqvj-pvhx.