CVE-2020-17467

Description

An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check for '\0' termination. Therefore, the deduced length of the hostname doesn't reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.76% Top 30%
Third-Party Advisory sourceforge.net Third-Party Advisory cisa.gov Third-Party Advisory cert.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.kb.cert.org/vuls/id/815128 third party advisory us government resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 third party advisory us government resource
http://fnet.sourceforge.net/manual/fnet_history.html third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2020-17467?
CVE-2020-17467 has been scored as a critical severity vulnerability.
How to fix CVE-2020-17467?
To fix CVE-2020-17467, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-17467 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-17467 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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